The Hotlum Glacier is a glacier situated on the northeast flank of Mount Shasta, in the US state of California. It is the largest and most voluminous glacier in California, although not as thick or long as the nearby Whitney Glacier.
On the northeast flank of Mount Shasta within California, the Hotlum Glacier stands out as a major ice formation. While it is the largest and most voluminous glacier in the state, it does not match the depth or length of the nearby Whitney Glacier.