Worms - bloody great big worms

I did some work at a persons house in Lennox some time ago, removing rocks from a rock stack at the back of the house and bolting some others in place. Tony (the driller) dis a great job splitting all the rocks by drilling them and pouring in expanding concrete to break them up into moveable bits.
We found under one, in some really deep litter this huge worm. I think its a local one. It was about 40cm when stretched out long.