Western Hemlock

 

Outside Rhinefeild Sandy's they're clearing invasive Hemlock Spruce (Tsuga), escaped from the adjacent enclosure. I'm sure, but I think these are Western Hemlock (Tsuga heterophylla) commonly grown for timber about the forest. Western Hemlock is fast growing imported species, native of North Western America, one which spreads both quickly and easily, left unchecked it would quickly form thick darkly shaded stands.