A lovely, evocative railway with some great master building work going on. Depending where you are in Derbyshire (I'm in Long Eaton), if you're in need of ballast, there is a good quarry that I last used a couple of years ago - bought quite a bit, so haven't needed to go lately, so I hope they're still operating. Take the A 515 from Ashbourne to Buxton and at Parsley Hay turn right onto a lane called The Rake. After a short distance, turn right again onto Long Rake leading towards Youlgrave and the quarry is on your right after about a mile. They sell quite a variety of different stones in sizes from 3 mm up and are very helpful. I bought a greeny-gray granite in 3-5mmwhich weathers very nicely and I think it was £2.75/£2.95 for a 10 kilo bag.