Dorgesh-Kaan–Keldagrim train system

The Dorgesh-Kaan Keldagrim train system is an underground railway system which provides transport between the cave goblin city of Dorgesh-Kaan and dwarven capital of Keldagrim. Completion of Another Slice of H.A.M. is required to use the train. Taking the train to Keldagrim is a hard task in the Lumbridge and Draynor diary.

The railway system is unique compared to other methods of transportation, in that it does not immediately take off when the player clicks the vehicle or the associated personnel. Instead, the "DKK" train acts more like a real-life subway system; the passenger walks into the train, after staying in one of the compartments for a while, the train takes off.

The player does not need to interact with an NPC for the train to take off; instead, they just need to wait. A short cutscene is displayed during the trip, after which the player will arrive in the opposite city's station. The length of the waiting, combined with the cutscene, is a total of 50 ticks (30 seconds).

Each stop has a large waiting area, with various dwarves and cave goblins wandering each station. There is a ticket dwarf in Keldagrim and ticket goblin in Dorgesh-Kaan, both of whom allow you to ride for free.