Lake Shasta Caverns

Potem Falls is a 70 ft waterfall on the Pit River arm of Shasta Lake

Turtle Bay Exploration Park, located in Redding, California, is a

Whiskeytown Falls is a three-tiered waterfall with a total elevation

Castle Crags is a dramatic and well-known feature in Northern

Castle Lake is a glacial lake (cirque lake or tarn) located in

Hedge Creek Falls is a waterfall on hedge creek, in the Shasta Cascade

Mossbrae Falls is a waterfall flowing into the Sacramento River, in

Burney Falls is a waterfall on Burney Creek, in McArthur-Burney Falls

İnicrliin Cave (Turkish: İncirliin Mağarası) is a show cave loc

Ballıca Cave (Turkish: Ballıca Mağarası), is a small cave situated at

The Dupnisa Cave (Turkish: Dupnisa Mağarası), aka Dupnisa Caves, is a

Gilindire Cave (Turkish: Gilindire Mağarası), also known as A

Postojna Cave (Slovene: Postojnska jama; German: Adelsberger Grotte;