A gallery grave is a form of megalithic tomb built primarily during the Neolithic Age in Europe in which the main gallery of the tomb is entered without first passing through an antechamber or hallway. There are at least four major types of gallery grave, and they may be covered with an earthen mound or rock mound.

A megalith is a large stone that has been used to construct a prehistoric structure or monument, either alone or together with other stones. There are over 35,000 in Europe alone, located widely from Sweden to the Mediterranean sea.