Grotte de Hontgrillon

Marsolan

The Grotte de Hontgrillon, in the commune of Marsolan, is a natural karst cavity around 100 metres long. Its entrance, once low and blocked by rockfall but known locally to hunters, was rediscovered in November 1977. It consists of a winding 28-metre entrance crawl leading to a spacious chamber 5 metres high, then a gallery 5 to 7 metres wide adorned with limestone formations. It is one of the few documented underground sites in the Gers département.

Getting there : Undeveloped cavity, access reserved for experienced cavers

Opening times and access details are given as a guide only: check before you set out.

Ambient sound