Chartist Cave

The entrance is a broad arch formed of Twrch Sandstone ('Millstone Grit') which overlies the Carboniferous Limestone immediately beneath.

The arched entrance is formed by a Twrch Sandstone ('Millstone Grit') cap from beneath which the underlying limestone has been eroded.

The more commonly used modern name derives from 1839 when Chartist rebels used the cave to stockpile weapons in advance of their march on Newport in November of that year.

In the cave were found a clay pipe, a flat perforated stone, and both animal and human bones.

[3] The cave is included in the Mynydd Llangynidr Site of Special Scientific Interest designated in August 2012 by the Countryside Council for Wales on the basis of the karstic landscape found here.