A sea cave, also known as a littoral cave, is a type of cave formed primarily by the constant beating of waves against sea cliffs. Waves pound the cliff faces, each one erodes away a little more of the base of the cliffs. Where there is a weakness, usually a fault or a dyke, the cliff will erode forming indentations. These reinforce the erosion by focusing more energy from the wave into the confined space which creates a cave.
Littoral caves may be found in a wide variety of host rocks, ranging from sedimentary to metamorphic to igneous.
Continued erosion eventually turns the cave into a tunnel or arch, since this is subject to attack from both sides, the cave tunnel will eventually collapse leaving a free-standing sea stack.
To log this earthcache, please email the answers to the following questions. No need to wait on a reply, if there is a problem you will be contacted. Any logs entered without an email being received will be deleted.
1. How many large entrances are there leading into the centre of the cave?
2. Provide an estimate of the width and height at the centre of the cave above the pool.
3. Based on the sequence in the diagram, which picture(s) best represents the coastline at the coordinates?
4. Please attach a photo to your log of you, your dog, gps, thumb or something personal to prove you were here. Please do not show any spoilers in your photo.
June 2019 the logging tasks for EC were updated. COs can now insist on a photo as proof of visit.
| We have earned GSA's highest level: |
 |