12 Dolmen Types, 4 for Ireland.

Types of Megalithic Monuments

In an Israeli Article on the "Eye of the Giant also known as "Rujm el-Hiri" and as "Gilgal Refaim" it was said that the site contained all 12 types of dolmen. I only found one or two on the site itself but in the immediate neighborhood there are very many. 

Here are some of them:

 In Ireland there four different types of dolmen that seem to more or less each pertain to its own district with some overlap between them.

Leinster

Court Tomb Donegal, West Ulster.

Portal Sligo. North Connaught.

Wedge, County Clare. North Munster in the south.