Stock photo: Hot spring Cave and Basin National Historic Site Sulphur Mountain Banff National Park Alberta Canada

Stock photo of the sun ray's through the Cave and Basin National Historic Site, Sulphur Mountain, Banff National Park, Alberta, Canada.

This stock photo shows the Cave and Basin National Historic Site, Sulphur Mountain, Banff National Park, Alberta, Canada.

The smooth concrete stairs lead up to a small sitting area with chairs for three people tucked under a crevice and overlooks the geothermal hot springs pool.

The sun’s rays stream through the craggy cave’s opening above the pool.

The cave's interior is a colorful rocky mass with its many shades of orange, gray, beige, blues and greens. The rocky area in the cave is teeming with cavities and crevices of different sizes and shapes.

The hot springs pool's calm water is a pleasing turquoise blue and is encompassed by a stone and mortar wall and goes back to the wall of the cave.

Cave and Basin National Historic Site, Sulphur Mountain, Banff National Park, Alberta, Canada.