North Vancouver Island is a pretty amazing place to go spelunking, one of the best is Huson caves. There are over 1000 known caves on the north island and perhaps as many yet to be discovered.
The Huson Cave system is a great place to introduce the public to caves carved out of the limestone rock by the Atluck creek. The system contains 15 caves that are easy and safe, perfect for the inexperienced caver; no special equipment is necessary.
The Little Huson Lake Cave Park is in an incredible area of the island and the canyon has some very special features which are unique to Vancouver Island.
The cave park includes Atluck Creek Canyon. This canyon has a number of interesting karsk formations, there is a natural bridge that is quite amazing and is the only one on the island. There is a large cave where the creel flows underground for 60 meters, this is known as the cathedral cave, its pretty cool.
There is ample areas to camp in in the area, with the Huson lake site being the closest, this is a very nice camp ground with lots of space. There is a boat ramp and picnic tables along with a very large green area.The park has a number of other minor karst features like scallops that form in the rock walls, they are rippled rock surfaces that have been created by high pressure water flow.