The Dwarven Caravan
From Mortal Realms Mud
The Dwarven Caravan is actually a mobile area. It's made of eleven rooms, which travel the roads of the central continent in a circular loop. You can see this loop by putting the maps together. The caravan costs only ten gold pieces to get on board.
Quite some time ago, a group of dwarves was outcast from its homeland. They became nomads, wandering the realm in a great caravan. Lacking funds, they decided to allow passengers to ride their caravan for a price. They also began selling merchandise, and it became their way of life.