11. During periods of low volume, the river disappears underground and becomes a subterranean river . 12. Apaxco has thermal waters, and subterranean rivers with hot springs, called " Los Ba�itos ". 13. These sinkholes drain all the water, so there are only subterranean rivers in these areas. 14. It meets the subterranean River Sheaf beneath the Station. 15. The Castlereagh River is partly a subterranean river . 16. Plato contended that channels of hot and cold waters flow in inexhaustible quantities through subterranean rivers . 17. The entrance to the subterranean river is a short hike or boat ride from the town Sabang. 18. Several other novels also feature subterranean rivers . 19. The cave was formed as a result of a sinkhole eroding a kalk formation by a subterranean river . 20. For three months, refugees lived here, fishing in the subterranean river and sleeping in the cold, dripping caverns.
