Coves de Sant Josep offers its visitors a quiet boat ride along one of the most spectacular navigable underground rivers. The visit includes a 800-meter boat ride and a 250-meter walking tour.
The visit lasts approximately 45 minutes, and the cave has a constant temperature of 20ºC throughout the year. It represents the longest cavity in the province of Castellón and the second in the entire Valencian Community. It is the longest navigable underground river in Europe.