Huntley Quarry contains some of the oldest rocks in Gloucestershire, including the only known exposure of the Huntley Quarry Beds. The age of the quarry is unknown, but was certainly in use in the 1830’s when Robert Murchison, the famous geologist who established the Silurian system, was working in the May Hill area.

The Huntley Quarry Beds are sediments containing abundant volcanic material, the age of which is unknown. The layers of sandstone and siltstone have been considerably deformed by folding, thrusting and faulting due to the close proximity of the Blaisdon Fault. The self-guiding trail around the quarry reveals the complicated structures and attempts to unravel the tectonic and geological history of the site.

Huntley Quarry is now owned and managed by Gloucestershire Geology Trust as a Geological Reserve. More information about the site can be found on their website.