Boca do Inferno is located on the West coast of Cascais. In this place it is easily seen the sea action eroding the coastal cliffs.
The name “Boca do Inferno”- “Hell’s Mouth” given to this place was due to the strength of the impact of the sea waves on the coastal cliffs.
The rocks constituting these cliffs are of carbonated origin. It is easy to see the action due to rainfall, since the carbon dioxide contained by them, dissolves the carbonate ions present in the rocks.
In this place cracks and caves are formed in the interior of the limes and wastes of iron nature are deposited on the ground giving a typical color to the soil.
Perhaps Boca do Inferno was an old cave whose ceiling collapsed, forming a big open hole.
Between Cascais and Guincho there is a track for bicycling, jogging...
Follow the signs to "Boca do Inferno" - There are lots os them. Whether you came from A5 (Lisboa - Cascais), Guincho or Cascais.
In the cache place there are always several persons. The best time is in the morning. Less people.
Logbook, pencil, sharpener and an old 2,5 PTE coin.
Don't forget: "Cache in, trash out" and Leave No Trace
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