The Meehambee Dolmen is a megalithic portal tomb dating from about 3500 BC located in County Roscommon, Ireland.

[1] Initially supported on six upright portals, 2.3 metres high, the capstone is estimated to weigh twenty-four tonnes.

The portal stone supporting the back of the capstone has collapsed, allowing the capstone to slide backward out of position and causing the doorstone to collapse.

[1] It is thought that these tombs, of which over 1,200 have been identified in Ireland, were either the burial place of a single important king or chieftain or perhaps the tombs of several tribe members who inhabited the area in the Neolithic era.

[2] The tomb is located in County Roscommon, a few hundred metres from the M6 motorway.