Spencer Butte is this wonderful spot on the south side of Eugene, Oregon. It's especially nice during rainy weather--and you can get this "all alone in the wilderness feeling" Sort of --it's easily accessible, so there are typically many hikers.
Spencer Butte is the erosional remnant of a ~30 million year old mafic intrusion, one of many in the surrounding area. These intrusions are likely related to the Little Butte Volcanics, which make up much of the western Cascade Range, parts of which are seen to the south.
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