After the adventures at the Warrumbungle High Tops, we drove on to spend a day in Wollemi NP. We decided to do the Glow Worm Tunnel Walk,  an easy round-trip walk of about 10km. The walk follows an old stagecoach trail through a gorge on the first half, and former tracks of the Wolgan Valley Railway on the way back. The highlight of the trail is the old railway tunnel – a 500m long bend, completely dark in the middle and with lots of glow worms (which are not really worms but larvae of flies) on the walls. To reach the tunnel,…