Dinas Dinlle is a large sand/pebble beach with vast areas of sand from mid-tide level. The foreshore consists of natural pebble banks. The beach offers exceptional views towards the Llyn Peninsula (Penrhyn Llyn) and towards Ynys Llanddwyn (Llanddwyn Island) on Anglesey.
The cliff above the beach has an Iron Age hill fort that has been eroded by the sea, such that only a double semi-circular rampart remains. Finds of Roman pottery indicate a reoccupation in the 2nd or 3rd centuries.
People from a far come here. and a small airport is near. Caernarfon airport. Also during the war this was a RAF base.