IMMERSE IN NATURE! Winner of the “BC’s Remarkable Experience Award”! Explore Horne Lake Caves and discover underground waterfalls, fossils and amazing crystal formations. Take a fascinating guided tour or explore on your own into the smaller and more rugged caves. Slide down the world’s only Cave Slide! If you prefer your adventures above-ground, the Cave Theater and Fossil Trail will reveal the park’s mysteries without having to venture inside the caves. OPEN YEAR ROUND.