Northwest of Haverford West/Hwlffordd take the A487 to St David's/Tyddewi and then continue on the A487 towards Fishguard from St David's, turning left on the B4583 and then heading toward Abereiddy. Keep your eyes open for the left turn to Caerhys and Llanvirn to get to a car park. The coastal path westward takes you through the site of these two promontory forts. The ditches and banks are clearly visible one of which joins the two forts.