An adventure tour is a type of niche tourism, involving exploration or travel with a certain degree of risk, and which may require special skills and physical exertion. It includes adventure activities like skydiving, hill climbing, scuba diving, mountaineering, trekking, mountain biking, and bungee jumping. It also includes cycling, canoeing, scuba diving, rafting, kayaking, zip-lining, paragliding, hiking, exploring, canyoneering, sandboarding, caving, and rock climbing.