Water Hole in Portugal Looks Like a Portal to Another Dimension - Geology In

Photo: Turismo While it may look like a natural phenomenon, this watery sinkhole is anything but. Named Covão do Conchos it is regard

Stalactite caves – magical worlds beneath the surface

Pretty hole in the Lake - Review of Covao Dos Conchos, Serra da Estrela, Portugal - Tripadvisor

Covão dos Conchos – Portugal - Atlas Obscura

This secret waterhole in Portugal looks like a portal to another dimension

Getting to the bottom of Mel's Hole, News