To find the chain oak tree. As Liam say's
When turning out of Alton Towers' entrance, turn left (South exit) as if you were driving to Alton. On your right a pinkish building will appear,
On your right is the chain oak B&B and on your left is a lay-by that is by a large disused gate. You can usually see Oblivion track near it. I usually park in that lay-by. Carefully cross the road towards the chain oak B&B. Just as you enter the driveway where the pinkish house is, on your left is an old stone wall. You will find a gap in that wall leading to a bridal path. Go down the bridal path and about 5 to 10 mins walk, you will see the Old chain oak tree on your right with the steps leading up to it.