Was named by Wilf Julius Hilder, former employee of the Department of Lands. Wilf named features in this area based on a steam railway theme; this was due to the existence of the former Wolgan Valley Railway Line. The name was originally rejected by GNB in 1975 and much later assigned by GNB. Ref: Government Gazette, 29th September 2006. Derailment Hill is located 1.4km near due south of Mount Norris and has a height of 994m. This hill is on top of a small spur, which in turn is on the southern side of Railmotor Ridge.

• Rock Hill

• 501 055

• Gardens of Stone - Book 4
• Gardens of Stone - Book 5

• GOS4.22: Thorpes Folly via the Hair of the Dog Ravine
• GOS4.24: Minyaba Canyon and Bula Nadgyung
• GOS4.29: Mount Norris and Railmotor Ridge
• GOS4.31: Dingo Creek and Cerberus Creek
• GOS4.33: Cerberus Creek traverse
• GOS4.35: Hair of the Dog Ravine
• GOS4.36: Northern cliffs of Dingo Creek