From Arco head to Trento. Follow the main road until you get to the second roundabout of Sarche. Turn right, keep following Trento indications. Drive on the main road for 5.6 km, go under the bridge and after the bend turn right. At the stop turn left towards the roundabout, then take the last exit, Lon / Ranzo direction. Drive for 1.2 km and enter Ciago village, then keep following the main road for other 3.2 km until you get to a road junction. Go left, Laghi di Lamar direction, and drive on the main road for 3.9 km till you find on the right side of the road a large car park close to a picnic area (this car park is about 550 meters before the first lake).
If your goal is Lamar, park your car here. Otherwise keep driving for other 1.3 km, going over the first lake. You will reach a crossroad and on the right you will find the car park.
From the first car park, go through the picnic area and you will find an evident path going into the woods. After few tens of meters walking in the woods you will find the crag.
Lago di Lamar:
From the second car park, walk towards the lake and go over the restaurant “Ai 3 faggi”. Continue walking on the dirt road leaving the lake on your right and keep the right at the first junction. After few hundreds of meters you will get to the crag.