Many visitors to Ireland want to make sure that they see a dolmen. So the letter D in my A-Z of Things to See in Ireland is represented by dolmens. Now a dolmen is an ancient monument with at least two upright or standing stones with a capstone forming a sort of roof for the monument. Dolmens are assumed to be tombs. They date from Neolithic times. If the archaeologists are right then our hunter/gatherer ancestors were very reverential with regard to the internment of the human corpse.
There are at least four types of dolmen- portal tombs, wedge tombs, passage tombs and court tombs.