For the busy winter season, this service can help track down a spare hut.
The information centre occupies the same old log building as the bus terminal. Ask here about permits for mineral prospecting.
The tourist office in Rjukan is possibly the best in Telemark, with loads of information and knowledgeable staff.
This excellent tourist office has helpful staff and lots of resources.
Lots of local information, and staff revel in good troll stories.
The tourist office in the village centre has free coffee.
Has information on hiking trails and cycling routes.