Ski tunnel

Ski tunnels or indoor ski arenas make it possible to do cross-country skiing year-round. Except for the shape of the building they are similar to Indoor ski slopes. The temperature inside the tunnel is kept at a constant temperature of a few degrees below zero Celsius to prevent snow from melting.

Tunnels

Active

Location	Name	Length	Opened
Sotkamo	DNA Ski Tunnel	1,200 m (3,937 ft)	1997
Jämijärvi	Jämi Ski Tunnel	1,250 m (4,101 ft)	2002
Uusikaupunki	Vahterus Ring and Vahterus Ring II	1,000 m (3,281 ft)	Nov 2005
Paimio	Ski Tunnel Paippi and Ski Tunnel Paippi II	700 m (2,297 ft)	before 2006
Leppävirta	Vesileppis Ski Arena		before 2006
Torsby	Torsby Skidtunnel & Sportcenter	1,287 m (4,222 ft)	16 Jun 2006
Oberhof	DKB Skisport-Halle Oberhof	1,754 m (5,755 ft)	24 Aug 2009
Helsinki	Ylläs-Halli and Ylläs-Halli II	1,100 m (3,609 ft)	1 Sep 2009

Future

Location	Name	Length	Opening
Planica	Planica Nordic Center		Jun 2016