Newton St Loe SSSI is a geological Site of Special Scientific Interest (SSSI) close to the River Avon, also featured in the Geological Conservation Review. The site is designated as an SSSI because it represents the only remaining known exposure of fossiliferous Pleistocene gravels along the River Avon. In conjunction with other sites within the wider area, it has aided the development of a scientific understanding of the history of early glaciation within South West England. The bodies of mammoths ("Mammuthus") and horses ("Equus") have been found at the site.