Mount Yamnuska, the first major mountain on the north side of highways 1 and 1A, heading west from Calgary

Mount Yamnuska is an example of a Front Ranges mountain that consists of older (Paleozoic) formations thrust tens of kilometres from the west to lie on top of younger (Mesozoic) rock. This relationship was created by the McConnell Thrust Fault, which can be seen today where the Paleozoic limestone cliff meets the treeline and turns into Mesozoic mudstone and sandstone. This major fault contact is so sharp that you can cover it with your finger.

Today Mount Yamnuska is a popular rock-climbing destination, attracting everyone from beginners to the world's best.

Click on a dot to continue the tour:

Legend

	Holocene	Present - 10,000 years ago
	Quaternary	10,000 - 25,000 years ago
	Tertiary	25,000 - 65 million years ago
	Mesozoic	65 - 245 million years ago
	Paleozoic	245 - 670 million years ago