One of the most criminally underrated bands (next to Beyond Dawn) is In The Woods..
They existed from ’92 until 2000 and only made three albums (not counting Three Times Seven on a Pilgrimage, a collection of their three 7″ singles and a few new songs). They went from atmospheric blackmetal to more Pink Floyd/avantgarde/experimental rock but always delivered great albums. Way ahead of their times. Unfortunately they broke up in 2000.
Here is a song from their first album, HEart of the Ages. Enjoy.