The purpose of this earth cache is to introduce you to the basics about the Blowholes. The main lessons to be learnt are about the formation of the blowholes and what makes the blowholes "blow".
Blowholes are likely to occur in areas where there are crevices, such as lava tubes in rock along the coast. These areas are often located along fault lines and on islands. As powerful waves hit the coast, water rushes into these crevices and bursts out in a high pressured release. It is often accompanied by a loud noise and wide spray, and for this reason, blowholes are often sites of tourism.
Blowholes have the capacity to change the topography near their locations. Blowholes can eventually erode the area surrounding the crevices to form larger sea caves. In some instances, the cave itself may collapse. This event may create shallow pools along the coast.
Have added a waypoint for the information sign, which will provide you with some additional information on the Albany blowholes.
To get approval to log this earth cache, you need to answer the following.
1 - from your observations at GZ, how high can the blow holes blow water into the air? what features of the location contribute to the blowhole effects?
2 - what natural elements widen the cracks to create the blow holes? what effects will this have on the blowholes.