Ryan's human-powered adventures are always inspiring as he proves that anyone can get out and explore the great unknown. Extreme Treks is part adventure, part exploration and part education. The best way to understand and respect the world around us is to put yourself right in the path of Mother Nature.　　Episodes: Tanzania, Morocco, China, USA, Peru, Nepal, Italy and Oman.更多《官梯 小说》在线观看完整版、官梯 小说完整版在线播放、官梯 小说免费完整版在线观看相关欧美综艺资源，请持续关注放杰视联科!