Murphy's Haystacks

Murphy's Haystacks are a group of inselberg rock formations at Mortana on the Eyre Peninsula of South Australia, between Streaky Bay and Port Kenny. The formations are weathered pink granite, made mostly of quartz and orthoclase, with an overhanging dome shape rising about 8 meters that likely developed through a combination of underground rainwater erosion and later surface weathering along vertical joints in the granite. The site is listed on the South Australian Heritage Register. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/