Twelve apostoles, Australia
The twelve apostles are famous coastal landform in the Port Campbell National park, created by the costant erosion from the waves to the softer limestone.
This erosion formed caves in the cliff, these caves became bigger and formed arches that collapsed leaving only a stack.
Originally the highest stack was 75 meters while now the highest is 45 meters.
Every year, 2cm at the base of the stones are being eroted.
2003 before collapse 2010 after collapse