The subterranean river of the caves of Saint José is a natural cave located in the town of la Vall D´Uxó , 50km from Valencia. Its subterranean river is the longest accessible river in Europe and you will discover true Mother Nature on this boat ride which will leave you feeling amazed. Thanks to this trip on a small boat you will gaze upon different styles of rocks, stalagmites, stalactites, this is a genuine subterranean Lagoon.