behind the veil: inside horse tail waterfall, monasterio de piedra

dangerous huge inside jungle mysterious opening rainforest scenery spectacular tunnel waterfall cliff enchanted gloomy plunge stream amazing vegetation behind cataract cavern rock spain dark cave nature water environment landmark course river torrential watercourse landscape hydrology branch dripped fluvial hideaway hideout park lichen ecotourism moss veil: horse tail monasterio piedra peer through cascading where meets backlight mesmerizing natural spectacle