Geopora arenicola, commonly known as the hole in the ground truffle,[1] is a species of fungus belonging to the family Pyronemataceae.

It is an uncommon species found in Europe and Uzbekistan.

[2] The fungus forms a rounded ascocarp underground on sandy loam soils.

This fruit body remains subterranean for most of the year but breaks the surface in the spring to form a cream-coloured cup (apothecium) up to 3 cm (1.2 in) across and 3 cm tall.

[3] It is likely mycorrhizal, but it is difficult to determine the host species.