The dolmen of Jentillarri is, without doubt, the most spectacular megalithic dolmen of the Gipuzkoan Aralar. It is a megalithic gallery dolmen comprising 18 slabs. The cover, which has been displaced, was recently relocated. Human remains indicate a minimum of 27 individuals buried. It also provides remains of earthenware, two awls and three arrow heads.
According to a legend recorded by Barandiaran, it is here where the last pagans came to die after the arrival of Christianity.