Park at the end of the road near the closed gate. If the parking is full you can park further back near the camping. Leave some money at the box near the gate for road maintenance. From here follow the sign to Purkvika. It should be 20-25 minutes walk.
Online topo(in Norwegian): http://ekneklatring.net/wp-content/uploads/2013/08/Klatreveileder-Ekneklatring.pdf