developed specifically for the disabled. Extreme travel Extreme tourism involves travel to dangerous (extreme) locations or participation in dangerous events or activities. This form of tourism can overlap with extreme sport. Jungle tourism Jungle tourism is a subcategory of adventure travel defined by active multifaceted physical means of travel in the jungle regions of the earth. According to the Glossary of Tourism Terms, jungle tours have become a major component of green tourism in tropical destinations and are a relatively recent phenomenon of Western international tourism. Overland travel Overland travel or overlanding refers to an overland journey – perhaps originating with Marco Polo's first overland expedition in the 13th century from Venice to the Mongolian court of Kublai Khan. Today overlanding is a form of extended adventure holiday, embarking on a long journey, often in a group. Overland companies provide a converted truck or a bus plus a tour leader, and the group travels together overland for a period of weeks or months. Since the 1960s overlanding has been a popular means of travel between destinations across Africa, Europe, Asia (particularly India), the Americas and Australia. The "Hippie trail" of the 60s and 70s saw thousands of young westerners travelling through the Middle East to India and Nepal. Many of the older traditional routes are still active, along with newer routes like Iceland to South Africa overland and Central Asian post soviet states. Scuba Diving Scuba diving is a sport in which participants explore underwater places while inhaling compressed air from tanks. Scuba diving is most popular in locations with tropical coral reefs, but it may be found in almost any location with water. Popular destinations: Belize's Great Blue Hole Tahiti Sipadan Island's Barracuda Point Notes and references Further reading External links Scuba divers swim among the sharks, Fayetteville Observer Outdoor education Types of travel Tourist activities Urban culture