Sumallo Grove is the site of the largest trees in British Columbia’s E.C. Manning Provincial Park. Seen in this photograph taken yesterday are Western red cedar (Thuja plicata) and Douglas-fir (or as some would say, douglas) aka Pseudotsuga menziesii.
Another large tree species found in the grove but absent in this photograph is grand fir, Abies grandis. Vine maples, or Acer circinatum, provide the colour in this image. In exposed sites elsewhere in the park, the vine maples displayed brilliant orange-red colours; in the shady forest, though, the vine maples only showcased a bright yellow.
Botany resource link: This is pretty nifty–an at-a-glance guide to Autumn Colours in forests managed by the UK Forestry Commission..