Bali: From its first appearance in a surfing film in "Morning of the Earth" in 1971, Uluwatu has been inspiring surfers for decades. While the surroundings have undergone an avalanche of development with restaurants, bars and hotels, the wave is much the same as it was 40 years ago - a long left wall with crunchy hollow barrel sections over dry reef. Photo: John Seaton Callahan/surfEXPLORE
North Sumatra: Lagundri Bay at Nias is one of the iconic fantasy waves of Indonesia, a perfect righthander in the land of lefts. After the massive 2005 earthquake, the sea floor in the area rose as much as two meters and the the wave got better: longer and hollower than previous. Photo: John Seaton Callahan/surfEXPLORE
Bali: The Bukit Peninsula is the home of several perfect reef waves, from Uluwatu at the tip of the peninsula to Balangan inside Jimbaran Bay. A helicopter view shows the coral reef formation that makes for perfect waves. Photo: John Seaton Callahan/surfEXPLORE
North Sumatra: The classic Indonesian left at Asu, where long lines of Indian Ocean groundswell wrap around a coral reef with mechanical perfection. Asu is located on the equator, so shade is mandatory in the middle of the day as the tropical heat can be intense. Photo: John Seaton Callahan/surfEXPLORE
East Nusa Tenggara: Laki Peak in Sumbawa is one of the most popular surfing areas in Indonesia, with clean offshore lefts and rights. The many accommodation places in the area are usually booked with regulars who return season after season for their dose of tropical perfection. Photo: John Seaton Callahan/surfEXPLORE
East Java: Inside the boundaries of Alas Purwo National Park is the long point of G-Land, one of the world's best lefts. After the southeast trades start to blow in mid-morning, the barrels spin down the long reef with hypnotic perfection. Photo: John Seaton Callahan/surfEXPLORE
West Sumatra: The Mentawai Islands need no introduction, this fantasy playground of perfect topical waves for surfers has been regularly featured in video clips, photo essays and magazine stories for well over two decades , and for good reason: it's the best tropical surfing area on the planet. Photo: John Seaton Callahan/surfEXPLORE
North Sumatra: Viewing platform at Bawa in the Hinako Islands. Bawa is known as the Sunset Beach of Indonesia, where huge right barrels can happen on a northwest offshore wind. Photo: John Seaton Callahan/surfEXPLORE
East Nusa Tenggara: In Indonesia's far eastern reaches are several islands that receive plenty of swell in the Indian Ocean season and offer great waves with strong tidal fluctuations of up to ten meters/30 feet between high and low tides. Photo: John Seaton Callahan/surfEXPLORE
North Maluku: Far off on the Pacific Ocean side of Indonesia are islands so remote that Imperial Japanese Army soldiers were still fighting World War II as late as 1974. Not far from the jungle camp of these holdouts is a series of pristine reef breaks, now accessible by at least one surf charter boat. Photo: John Seaton Callahan/surfEXPLORE
North Sumatra: The Hinako Islands have two excellent waves, the classic Indonesia left at Asu and the hollow rights of Bawa. As they work on opposite wind directions, both can be surfed in the same day with a good boat to make the connection between islands. Photo: John Seaton Callahan/surfEXPLORE
East Java: The waves of G-Land are where the concept of the "surf camp" was conceived by Mike Boyum, Gerry Lopez and Peter McCabe in the 1970's. Surf, eat and sleep was their program and things are still much the same today at one of the world's best lefts. Photo: John Seaton Callahan/surfEXPLORE
Aceh: Although rocked by two of the strongest earthquakes of the century in 2004 and 2005, Aceh in north Sumatra is rebuilding and actively promoting surf tourism on the mainland and offshore islands. Photo: John Seaton Callahan/surfEXPLORE
Banten: In far West Java, densely populated Banten Province has a wide variety of breaks including the powerful peaks of Ombak Tujuh (Seven Waves), a spot that produces of the biggest rideable waves in Indonesia. Photo: John Seaton Callahan/surfEXPLORE
East Nusa Tenggara: Home to this righthander, one of the best rights in Indonesia, the many islands of East Nusa Tenggara are best reached by boat charter as they are rarely visited by foreigners. Photo: John Seaton Callahan/surfEXPLORE
West Sumatra: The Mentawai Islands are a surfer's dream. The islands have ultra-consistent swell, a huge variety of waves suitable for experts only to casual beginners and several world-class setups like the classic afternoon perfection of Lance's Right. Photo: John Seaton Callahan/surfEXPLORE
North Maluku: An increasing number of waves are being surfed in this area of Pacific Indonesia, a boat charter company now lists this lefthander as one of their destinations and a luxury resort is under construction on an island nearby. Photo: John Seaton Callahan/surfEXPLORE
West Nusa Tenggara: This righthander on a popular holiday island in Lombok only works on the biggest of Indian Ocean swells and an incoming tide. At low tide it will be stone flat. As the tide surges through the Lombok Strait, the waves increase in size and in two hours it can be six feet and perfect. Photo: John Seaton Callahan/surfEXPLORE
East Nusa Tenggara: The dry and sparsely populated island of Sumba is well off the tourist trail and has some of Indonesia's least assimilated native cultures. It also has several very high quality waves and receives perhaps more groundswell energy from the Indian Ocean than any other location in the country. Photo: John Seaton Callahan/surfEXPLORE
West Java: There are plenty of waves and surfers in West Java. This wave is on private property and needs permission for access. A rare rivermouth break, the sandbar is a mix of gravel, sand, rock and trash from the river, with the thousands of plastic bags and other rubbish anchoring the sand and giving the bar excellent shape. Photo: John Seaton Callahan/surfEXPLORE
Banten Province: Inside the parameters of Ujung Kulon National Park is Panaitan Island, home of two of the best waves in all of Indonesia, One Palm Point and Apocalypse. This is where you surf on smaller days, a hollow left known as Napalm for it's extreme shallowness and vicious coral reef. Photo: John Seaton Callahan/surfEXPLORE
West Papua: Indonesia shares the giant tropical island of New Guinea with Papua New Guinea and more waves are being discovered in this remote area every season. Photo: John Seaton Callahan/surfEXPLORE
North Maluku: On the other side of Indonesia is the Pacific Ocean, with an equal or perhaps greater number of good waves than the Indian Ocean side of the country and hardly anyone surfing. Photo: John Seaton Callahan/surfEXPLORE
West Papua: With plenty of swell from the Pacific Ocean, there are many unridden waves in eastern Indonesia. This hollow wave breaks like a beachbreak but is unforgiving coral reef. Photo: John Seaton Callahan/surfEXPLORE