Take the M80 towards Stirling and follow it as it becomes the A80. Go through the 30mph sections around Moodiesburn past a few exits and then take the one towards Kilsyth. Following signs to Kilsyth, go straight on at the first roundabout, take the fourth exit at the next larger one and then the second exit at the next one. Go straight through the next roundabout and pass through Croy. After Croy you get to a T-junction, go right here (still towards Kilsyth). Drive past the marina and over the canal and the quarry is just on your right.