1 From the car park, take the track past the visitor centre towards the main lake. Bear left, at a fork of tracks, to walk near the water's edge. Having left the lake behind, look out for a stile in the fence to your left. Notice the waymarked sign - 'Waterton Trail' - here and at many other points on the walk.
2 Join a field path, keeping a fence to your right. Cross two fields in the same direction towards a golf course. After you take a pair of stiles and a tiny footbridge in quick succession, bear half right across the next field. As you leave this field via a stile, bear sharp left to follow a grassy track along the fringe of the golf course. Pass a small pond, and enter woodland. The obvious path stays close to the edge of the wood and soon follows a lake on your left. Leave woodland on a stony track with views over the lake and Walton Hall Hotel on its island. As you approach another golf hole you will have to make some minor detours (follow the signs) as you approach the hotel complex.
3 Keep right along a track, towards woodland, but then go immediately left on a grassy track. When you meet a more substantial track, follow it left, for 75yds (68m). Bear left after a fence on a grassy path uphill through scrubland. Go through a gap in a brick wall, turning left to follow the wall. Meet the hotel's access road and go right. At the top of the hill, just before the golfers' clubhouse, bear left to join the tow path of the Barnsley Canal.
4 When the path forks, go right, uphill, to cross a bridge over the canal. Bear right to follow a good track, still following the canal. When the track forks again, keep left. Follow the boundary wall of the Walton Estate into woodland. Keep left by an information panel and leave the woodland through a gate. Walk uphill on a stony track which soon becomes a metalled access road. Follow it back to the Heronry car park.