This One boom heuvel foto contains
sitka sparren, sitkaspar, picea sitchensis, oeverbos, oeverstaten bos, douglas spar, and douglas fir.
There might also be
beuken, beuken boom, beuk, mahonie, mahonie boom, berg scheerling, zwart scheerling, mertens 'berghemlockspar, berg hemlock, zwarte hemlock, and tsuga mertensiana.