Although certainly known to the Qualicum First Nation, the first reference to caves at Horne Lake is in a geological report from 1912.

Fears of vandalism in the recently revealed Euclataws Cave (discovered in 1963 by Jim & Delores Johnson of Nanaimo BC, but kept secret until about 1969) led local cavers to approach the provincial government for protection, and in January 1971 Horne Lake Caves became a provincial park.

Vandalism and gate-breaching continued, however, and in 1984 a serious incident of vandalism in Riverbend Cave led to increased attention and the creation of a management plan in 1985, followed by improved visitor facilities and privately managed cave tours.

The park includes forest and part of the Qualicum River which provides opportunities for hiking, fishing and canoeing.

This British Columbia protected areas related article is a stub.