Ive always loved wandering about on the Common, over the humps and bumps of the ganister mine remains and in and out of the quarries. But the one thing that has fascinated me ever since I saw its picture on Picture Sheffield was Cave House, and today I think I found it. The house was built by Thomas Halliday in around 1740 and blown up in the 1920's. It was built into the rock face, water was drawn from a nearby well and there was a small enclosed garden. What is left today is a small walle