At the small community of Brisco north of Radium Hot Springs, calcium carbonate water, emerging from cold springs beneath a small lake, has developed an extensive surface blanket of tufa, at least seven metres thick in places, which extends across several fields on both sides of Highway 95. The owners of some of the affected land, the Wolfenden family, staked the tufa deposit and are marketing it to alpine gardeners in Calgary. The tufa is of good quality and easy to extract in large chunks with a backhoe.