The dolmen Lletty'r Filiast is located at the foot of the peninsula near Llandudno. Llety'r Filiast is the remains of a Neolithic portal tomb on the slopes of the Great Orme.

It was built before Bronze Age people worked in the nearby copper mines (backdrop). The chamber is about 2.1 m long and 1.5 m high. It is located in the remains of a cairn that once covered the chamber.