We entered into the cave following the rivulet, some 28 to 30 feet wide. We walked along the banks as far as the calcareous incrustations allowed us; frequently, when the current slipped between high clusters of stalactites, we were forced to walk along the river bed, only 2 feet deep. To our surprise we learned that this underground stream is the source to the Caripe river and becomes navigable for canoes a few leagues from here, after joining the Santa Maria river. Along the underground rivulet banks we found a quantity of palm-tree wood, remains of trunks used by Indians to climb to the cave's ceiling when searching for nests. The rings formed from the traces of the leaf stems are used as a perpendicular ladder.