Volcano boarding or volcano surfing is a sport performed on the slopes of a volcano. One of the most popular places for the activity is the Cerro Negro near Leon in western Nicaragua. Riders hike up the volcano and slide down, sitting or standing, on a thin plywood or metal board. The sport is also practiced on Mount Yasur on Tanna, Vanuatu; Mount Bromo in Indonesia; and very few other locations.
Volcano boarding can be an extreme sport. Potential dangers include falling and getting cut by the rough volcanic ash, breathing poisonous gasses, contracting histoplasmosis (otherwise known as "caver's disease"), or being hit by flying molten lava. Protective gear, including jumpsuits and goggles, is often used. Cerro Negro is also an active volcano, although the last eruption was in 1999. Mount Yasur is far more active and more dangerous, with volcanic eruptions occurring every day.