Surfer Rex Calderon  (photo: Joao Canziani) The beach at Hotel Punta Teonoste (photo: Joao Canziani) The Cathedral of Leon  (photo: Joao Canziani) The author on Cerro Negro  (photo: Joao Canziani)

THE WIND IS HOWLING, the bats are flying, and I’m on the wrong side of the zona de peligro—no pase sign, peering into what 16th-century Spanish priests considered to be the burning maw of hell. It’s after-hours at Masaya Volcano National Park, Nicaragua’s first, where a 36-square-mile caldera gracefully rises 2,095 feet above the dry tropical forest halfway between the capital, ­Managua, and the colonial city of Granada. The crater I’m peering into, ­San­ti­ago, is one of the most ­active in Central America, spewing as much as 1,200 tons of sulfur dioxide per day. The pulsing thump of glowing ­magma 1,246 feet ­below sounds like crashing waves. It’s so mesmerizing that I take a step closer.

If this park were in the U.S., there would be a six-foot chain-link fence topped by razor wire circling the crater rim. But Nica­raguans have a large appetite for risk and a practically nonexistent national-park budget. This no-barriers connection to what lies beneath, as well as nighttime tours of massive bat caves, are what make the park so sensational. My guide, Juan Carlos Mendoza, was here at Masaya in 2001 with 150 American tourists when it erupted.

“I heard a boom and thought it was dynamite,” Mendoza says. That’s when a volcanic rock bombed his bus, making evacuation difficult. Since everyone came out alive, Mendoza, a 50-year-old former Sandinista, remained calm. He’d seen worse.

“Su turno es su turno,” he tells photographer João Canziani and me as, on cue, a deep boom emanates from the crater and I leap toward the “safe” side of the fissure on the rim. In other words, when it’s your time to die, it’s your time to die. Not only do I respect Mendoza’s savant-like knowledge of Nicaragua—from bird species to batty politicians—but after a week traveling together, I’m also starting to get his Latin pícaro sense of humor. It’s dark, spicy, and not at all PC.

It also matches the mood of Masaya, which I’ve deemed the Dark Park because of the near perfect metaphor it creates for Nicaragua’s surreal and violent history. Hundreds of years ago, Masaya was used as a sacrificial altar by the Chorotega ­Indians, who threw maidens and small children into the crater to ­appease the goddess of fire. In the 1970s, dictator Anastasio Somoza Debayle’s hit men dumped their tortured prisoners’ bodies here to disappear the evidence. “Beauty, in Nicaragua, often contained the beast,” wrote Salman Rushdie in his 1987 book The Jaguar Smile.

Most Americans know more about its beast than its beauty. Our collective knowledge of Central America’s largest country—slightly bigger than the state of New York, with a population of nearly six million people, and the second-poorest nation in the Western Hemisphere—centers on two events. The first was the five-year civil war that killed an estimated 50,000 Nicaraguans and ended with the socialist Sandinistas’ overthrow of Somoza in 1979.

The second was the contra-Sandinista war, a poorly masked U.S.-Soviet proxy conflict to control this resource-rich banana republic. The war lasted through most of the 1980s and killed 30,000 people, but for Americans the screaming headline was the Iran-contra affair, the 1986 scandal in which the Reagan administration illegally sold arms to Iran in order to fund the contras, the Nicaraguan soldiers trained by the U.S. to overthrow the Sandinistas.

Add a string of corrupt politicians and the 2006 resurgence of President Daniel Ortega, a populist Sandinista whose administration is heavily backed by oil subsidies from Venezuelan president Hugo Chavez, and it’s clear that while Nicaragua is no longer a dictatorship, it isn’t exactly a democracy, either.

But even questionably ethical leadership can’t keep Nicaragua from finally, fully taking advantage of its assets: it may come as a surprise to most Americans that the country is on par with Panama as the second safest in Central America, behind Costa Rica, according to United ­Nations statistics. It’s also one of the most biologically diverse. More than 18 percent of Nicaragua is protected in 77 parks and reserves, which include the more than five-­million-acre Bosawás Biosphere Reserve, the second-largest intact rain­forest in the Western Hemi­sphere. It has 25 volcanoes ­(seven of which are active); more than 750 bird species; empty, world-class surf beaches on the Pacific; unexplored jungles on the Caribbean; and a population that is pulling itself up by its bootstraps through tourism. With a growing number of colo­nial hotels and designer eco-lodges, the allure of Nicaragua is no longer a secret. More than a million foreigners—210,479 from the United States—visited in 2010. Like Costa Rica 20 years ago, Nicaragua is on the cusp of going mainstream.

It’s impossible to see the entire country in ten days, so we’ve started in Managua and are making a figure-eight loop northwest to the city of León and the beaches of the Pacific; then to Granada; then ­turning south to the expat surfing hot spot San Juan del Sur. From there we’ll visit the newly anointed World Biosphere ­Reserve of Ometepe Island in Lake Nicaragua—the ­largest freshwater body in Central America—and finish back in Managua.

Tonight we’ve diverted from the gringo trail altogether. The park is deserted, and we have the glow of the Masaya Volcano and the distant view of moonlit Lake Nicaragua to ourselves. From this vantage point, it feels like Nicaragua’s moment is now.

“I CONSIDER MYSELF to be very nationalistic. I love my country,” Mendoza tells me as we speed toward Managua in a white SUV. We’ve been poking around the ruins of León Viejo, the second-oldest Nicaraguan city, founded in 1524 and destroyed by a severe earthquake in 1610. This former gold-trading center is Nicaragua’s first World Heritage site.

“Our history is very heroic,” Mendoza continues. “This country has so much potential, but I don’t think I’m going to live long enough to see its future.”

Mendoza is the future of Nicaragua. Five foot eleven and barrel-chested, he speaks impec­cable English, wears a military buzz cut, has a massive jaguar tooth dangling around his neck, and never takes off his name tag. He’s the country’s conduit to the world—from everyday people on up. When Pope John Paul II was scheduled to visit in 1996, Mendoza was the man assigned to show him around. Unfortunately, the plans were changed at the last minute.

“I could have ridden in the Popemobile!” he says dejectedly.

Mendoza was also, as they say, “en la lucha”—in the fight. After graduating from John F. Kennedy High School in Fremont, California (his family sent him to the U.S. after an earthquake demolished Managua), in 1980, he was selected by the ministry of tourism to undergo a yearlong intensive training program, studying the history, geography, wildlife, flora, fauna, and volcanology of Nicaragua. In November 1983, he was hired as one of the country’s first official tour guides. Five months later, he was drafted into the Sandi­nista army. Mendoza went off to the jungle without complaint.

“I thought it was correct to defend my country,” he says.

After two years, Mendoza was allowed to return to his tourism job; he was assigned VIPs like Kuwaiti princes and a Central American president. He’s been at it ever since, guiding for Careli Tours, a company owned by the Melchiors, the ­family that pioneered Costa Rican environmental tourism.

It’s impossible to fully under­stand a country as conflicted and convoluted as Nicaragua. While it helps to study the past, it doesn’t do any good to dwell on it. Within an hour’s radius of León, there are plenty of ways to ditch the beast and connect with the beauty. We hiked 2,395-foot Cerro Negro Volcano, a jet-black dome with a crater so active that it melted Canziani’s hiking boots. On Juan ­Venado Island, a mangrove-lined estuary that parallels the Pacific, we saw caimans and a pale-billed woodpecker so elusive that Mendoza had to look it up in his Birds of Costa Rica book—Birds of Nicaragua doesn’t yet exist. A few miles up the coast in the village of Las Peñitas, we ate ruco, a whitefish fried whole and ­sautéed in tomatoes and red sauce, under palapas over­looking a wild beach that stretched for miles.

A day later, we’re 80 miles southeast on a 23,100-square-foot island in the northwest corner of Lake Nicaragua. It’s one of the only freshwater lakes in the world populated by sharks. (The dictator Somoza delighted in feeding them cows.) We’re sharing Jicaro ­Island Ecolodge with a Colombian photo­grapher, his assistant, and a Brazilian model, who are here to shoot a cover for a tony U.S. travel magazine. This stunning and simple nine-casita lodge, which opened in 2010, was the vision of British businesswoman Karen Emanuel, who partnered with British architect ­Matthew Falkiner to create an oasis made from local volcanic rock and recycled wood. This is one of those getaways where, after you’ve completed your yoga, meditated, and taken a dip in the lake, the chefs will prepare you a honey-infused tropical-fruit smoothie for breakfast before you sprawl out by the pool.

But sometimes the beast rears its head even in paradise. An employee at Jicaro, who wished to remain nameless, began fighting for the Sandinistas at 17.

“I try to forget it. It wasn’t a good time,” he told us at break­fast. “If I wanted to smoke a cigarette, I had to hide it in a ­banana leaf so the enemy couldn’t see the light and kill me.”

The only benefit of the war, he adds with a smile, was that when it finally ended there were seven women for every man. “I’m so happy because my wife is young and I enjoy life,” he says. “The war was over 20 years ago. Now all we have is a beautiful future.”

FOR THE GOOD LIFE, wealthy Managuans and expat surfers congregate on the Pacific coast at San Juan del Sur. Twenty-five miles northwest of the Costa Rican border, the beach town of 18,500 people sits on a half-moon bay with a statue of Jesus looking down from one hillside and the guests at the luxury Pelican Eyes resort looking down from the other. We’re in town only long enough to pick up Rex Calderon, the 19-year-old Central American surfing champion, who grew up a block from the beach. The unassuming five-foot-six, mustached and muscled pro is going to show us how to catch a wave Nicaragua style.

From San Juan del Sur, Mendoza drives 30 minutes north on a dirt track through the dry scrub and stops at a wooden gate manned by two armed security guards. One of them pokes his head into our SUV and charges $3 per person to enter the private property that grants ­access to Playa Hermosa, a beach so untouched that the last two seasons of Survivor were filmed here. A few miles beyond the gate, the road dead-ends at a parking lot where a truckload of local surfers are packing it in for the day. The offshore breezes here are generally perfect in March and April, but it’s February and the heavy winds blowing off Lake Nicaragua, to the east, are chopping up the swell.

Beyond the palm trees and palapas, the beach opens up into a mile-long crescent. To the southwest, the mountains of Costa Rica rise in the hazy distance. Out on the water, Calderon, who has been sponsored by Quicksilver since he was 13 and is Nicaragua’s answer to Mick Fanning, is ­cutting through the waves with the grace of a cat, launching impressive air and popping effortless 360s. To his right is Johnny Goldenberg, a 43-year-old Canadian expat and local real estate entrepreneur who moved to San Juan del Sur five years ago. With a gap-toothed smile and a body full of tattooed Buddhist wisdom, Goldenberg is Calderon’s benefactor, ­providing him with Eberly boards.

“Rex is a good kid—he doesn’t drink, smoke, or do drugs,” Goldenberg tells me as he zips up his wetsuit. “And he’s a coldhearted killer in a contest. The only problem is trying to get him to leave Nicaragua to compete. He loves it here.”

“I’ve had to travel far and wide to find a surf spot with only three guys in the water,” he continues. “The only way I’m leaving is if I can’t afford to live here anymore. Nicaragua is a cross between Cuba and Cabo. It’s got that natural beauty, but the look and feel of socialism. The nervousness when nobody would invest is gone.”

A friend of Calderon’s has just finished telling me how safe it is here when a security guard wearing a BEER IS AN APPETIZER T-shirt drives up in a rusty Land Cruiser and urges me to hide my camera. The only other person within a mile is a woman in a bikini sunbathing. I wonder out loud who he thinks might steal it. The security guard points to the dense jungle scrub behind the beach and is about to expound when a surfer appears out of the water. He intro­duces himself as Juan Manuel Caldera, a local developer.

“It’s very simple. We have kids who watch surfers with fancy sunglasses and shorts, and they start snatching things,” Caldera explains. “We’ve solved that by putting security here.”

Caldera, it turns out, is a Nicaraguan journalist who covered the contra-Sandinista war for NBC and now owns the off-the-grid solar-powered development Las Fincas, a few miles away. He, like Mendoza, had the resources to leave Nicaragua during the worst years. But for both men, the pull toward home was too strong to resist.

“Nicaragua is the safest, most wonderful country in Central America,” Caldera tells me as we slowly walk back down the empty beach. “But it’s all about perception. We have got to change the perception.”