In reply to fingermagic:
Surprised you liked Mountains of the Mind. I found it as dry as an old bone as did several others on here when it's been discussed in the past.
In a spiritual vein the long out of print 'The Mountain Spirit' Tobias/Drasdo is worth a read. A surprisingly cheap copy in the states on Abebooks...
http://www.abebooks.co.uk/products/isbn/9780879511685/Tobias-Michael/Mounta...
'Findings' mentioned above is OK is a low key sort of way. Not about mountains though.
Probably the best outdoor book I've read of a spiritual bent is 'Desert Solitaire' by Edward Abbey. Then try his essay collections...The Journey Home...Down the River and several others.
The big Abbey novel is 'The Monkey Wrench Gang' which inspired environmentalists to form the radical Earth First movement and introduce 'Monkey Wrenching' into the green agenda.