In geology, bedrock is solid rock that lies under loose material (regolith) within the crust of Earth or another terrestrial planet.
The curvilinear shape of Birch Bay’s shoreline resembles similar shorelines around the world that are shaped by the refraction or bending of waves to the lee of a nearby headland
The various kinds of broken and weathered rock material, such as soil and subsoil, that may overlie the bedrock are known as regolith.