Welcome to the site Jeff,
Several years ago me and a buddy drove our jeeps out there and drove them up Mt. Blanca and camped up there by the lake at 12000 ft. Very pretty out there, we were able to drive up to about 13,500 feet, up by the upper lakes, then had to get out on foot.
Take care
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The statement below is my signature and just my overall feeling towards our industry and does not necessarily pertain to you nor this thread.
There really isn't a legitimate excuse for not doing the job correctly!