Maptown -- Topo maps

View up Goodwin Lake Text at bottom of the photo states: View north up Goodwin Lake, 70 km east of Atlin, which is bounded by 80 Ma granitic rocks of the Surprise Lake Batholith. 80Ma = 80 million years ago.

Batholith at Wikipedia

Batholith Search

This is a link to Atlin's website, a small community in the NWT

This link is about the community of Atlin

This is a link at infomine for Goodwin Lake information. Subscription required.

This is a link at Infomine for Goodwin Lake/Tyhee information. Subscription required.