Boca do Inferno - Cascais, Portugal
Posted by: 
razalas
N 38° 41.459 W 009° 25.833
29S E 462556 N 4282573
This Natural Sinkhole is very famous and is known as Boca do Inferno (Mouth of Hell).
Waymark Code: WMG795
Location: Lisboa, Portugal
Date Posted: 01/23/2013
Views: 10
The feature that makes up the rock is carbonated nature. The erosion action exerted by the rainwater that containing dissolved carbon dioxide, cause the dissolution of the carbonate. Through this process the cavities are formed inside the caves and limestone.The place was old cave that with the reduction of the upper layers of the cave have been destroyed, leaving a huge hole open.With unique features is local leisure, where you can enjoy a divine landscape and magnificent setting of the sun, being overshadowed by not only rare suicides in its dangerous and unprotected cliff.
Visit Instructions:
Please provide a photo of you and/or your GPS at the site.