At the foot of Yr Eifl, the tallest hills on the peninsula, lies the village of Trefor, which owes its very existence to the quarries on the hills above it. Granite from Yr Eifl quarry has been used to make Olympic Curling Stones, as well as many curb stones in the larger towns and cities of England and Wales.

Trefor's small harbour offers a small sandy beach, on this otherwise fairly rocky stretch of coastline, as a wander to the end of the old pier illustrates as you look either way along the shore. The pier is popular with fishermen and there are many walks which explore the coast and hills that start from the village.

Trefor is a close community with basic facilities available at it's centre. The village is roughly 8 miles from Pwllheli and 12 miles from Caernarfon.