Tenorio Volcano National Park (Parque Nacional Volcan Tenorio) was created in 1995 and encompasses over 18,400 hectares of rainforest and cloud forest as well as the Tenorio Volcano itself. The prize possession of the Tenorio Volcano National Park is the Rio Celeste ``Blue River'' that meanders through the jungle. As you hike along the trail, you can visit a spectacular waterfall as well as see where two rivers converge to create the celestial blue Rio Celeste, a natural phenomenon.