This whole valley was once full of red hot lava, 100m deep.

The lava all came from the Opal Cone in Garibaldi Park between 10-12k years ago. It stops about a km from my place.

The lava flow gives the Mamquam valley an unusual feature: it divided the valley into two rivers: Ring creek on the north and Skookum Creek on the south (which joins the Mamquam).

Ring creek joins the Mamquam right before the Squamish Golf Course.

Here& #39;s the spot near Sookum creek where the lava flow enters the Mamquam valley, the road cut exposed the Columnar jointing.

It similar to Black Tusk but a different rock (dacite I think).