This trail starts next to the picnic area of the village of São Brás.
Leave the car park where the information panel is located, keep to the right of the asphalt road for 200m until you reach a place where there is a monument honouring old oxcarts.
Turn left onto a dirt trail, where further ahead, you will find the Relheiras, the marks carved in stone by ancient oxcarts. You can spot two types: narrow and V-shaped; broad and flat.