Keyhole Falls

From Wikipedia, the free encyclopedia

Keyhole Falls - all that grey is ash from the last time Mount Meager blew up 2350 years ago
Keyhole Falls - all that grey is ash from the last time Mount Meager blew up 2350 years ago

Keyhole Falls is the unofficial name for the largest waterfall along the Lillooet River in British Columbia, Canada.

It is called Keyhole Falls because it resembles a giant old-fashioned keyhole.[1]

[edit] Formation

Keyhole Falls was formed when the Lillooet River was dammed with breccia from a Plinian eruption at Mount Meager about 2350 years ago. The thick breccia soon eroded from water activity, forming Keyhole Falls. There was a massive flood when the water first broke through the breccia. The flood was big enough that small house-sized blocks of breccia were carried away during the flood.[2]

[edit] See also

[edit] References