Walk up the access road for 750yds (686m), until just before a junction of tracks. Note a stile on the right – your route returns over this.

Turn left then, in 25yds (23m), curve right, passing a seemingly nameless house with a stone wall relic in its garden. Shortly curve left to walk through Yatton, to a T-junction. Turn left to the A4110. Cross directly to a stile, striking across this field to a gap. In the next field veer left to skirt round the right edge of (not over) an oak and ash embankment, to find a corner stile. Walk up the left edge of this field but, at the brow, where it bends for some 70yds (64m) to a corner, take a stile in the hedge to walk along its other side. Within 60yds (55m) you will be in a clear path, steeply down through woodland, a ravine on your left. Join a rough driveway to a minor road. (The glacial overflow channel is directly ahead.)

Turn left here, joining the Mortimer Trail. Enjoy this wooded, riverside lane for nearly 0.75 miles (1.2km), to reach the A4110 again. Cross, then walk for just 25yds (23m) to the right. (The Riverside Inn is about 175yds/160m further.) Take a raised green track, heading for the hills. Then go diagonally across two fields, to a kissing gate and wooden steps.

Within a few paces fork left to ascend steeply through the trees. Leave by a stile, to cross two meadows diagonally. Over a double stile, walk along the lefthand edge of a field, still heading downhill. At the trees turn left. Soon reach a tarmac road. Turn left along the road, now going back uphill. Beyond Hill Farm, enter the Croft Estate. Walk along this hard gravel track. After 110yds (100m), ignore a right fork but, 550yds (503m) further on, you must leave the track. This spot is identified where deciduous trees give way to conifers on the left and you see a Mortimer Trail marker post on the wide ride between larches and evergreens on the right, approximately 250yds (229m) on from a large, green Croft Wood sign.

Turn left (there is no signpost). Within 110yds (100m) go half right and more steeply down on an aged stone path. Within 250yds (229m) look out for a metal gate, way-marked, leading out of the woods. Walk along its right-hand edge, admiring the former quarry’s new landscape. Walk briefly in trees then out and, at the far corner, within the field, turn left to Point 2. Retrace your steps to the start of the walk.