Heading up the No. 16 Hwy, just outside McBride, BC we came across the West Twin Oldgrowth Area. It is a largely undeveloped park. There is virtually nothing on the internet on it, so the only way that you are going to find it is by driving by it on the road. I love serendipitous discoveries!
It is a lone patch of magnificent old growth forest in a major logging community. There are a few well maintained trails that wind through it. The big trees cut the sunshine to the forests floor so there is limited undergrowth under the trees; so you have good sight-lines through to all the big trees.
At the head of the trail is a map showing you the various trail options. We chose to do the easiest, shortest one (1.5 km) because we are trying to get up to the Yukon as soon as possible. This stopover is well worth it if you get a chance to see it.