This is "Aspen" by Oak Pantheon from their 2012 debut album From a Whisper.
Oak Pantheon takes inspiration from the folkier, more melodic side of black metal such as Agalloch and Ulver, though they tend to go a bit heavier.
This album and further works by Oak Pantheon are available at oakpantheon.bandcamp.com
Oak Pantheon is: Sami Sati, Tanner Swenson. Recording and mixing by Sean Golyer.