What should it sound like when you're climbing a mountain? This thread can include some earth-themed levels, slopes, and hills, as well as tree- and snow-covered mountains, too.

Here are my favorites:

Wizards and Warriors II - Mountain (http://www.youtube.com/watch?v=2ROQnr299Fo) (first song)
Suikoden - Distant Mountain (http://www.youtube.com/watch?v=47qlL8fvMcE)
Final Fantasy IV - Mt. Ordeals (http://www.youtube.com/watch?v=GHXrUUjlGjM)
Final Fantasy X - People of the North Pole (http://www.youtube.com/watch?v=ooA7CNbFne8)
Little Samson - Golem Theme (http://www.youtube.com/watch?v=ZQjMkxZE_zU)
Granada - Mountain Path (http://www.youtube.com/watch?v=MKwqUUC6OWI)
Blaster Master - Level 1 (http://www.youtube.com/watch?v=wpnQKIi64yE)
Chrono Trigger - Primitive Mountain (http://www.youtube.com/watch?v=mnumgbGko1E)
Final Fantasy VI - Mt. Koltz (http://www.youtube.com/watch?v=Z4ik1D3PzOA)
Robotrek - Hacker's Base 1 (http://gh.ffshrine.org/soundtracks/2909) (download)
Super Mario 64 - Snow Mountain (http://www.youtube.com/watch?v=W9ivGbEbcPc)
Ys III - Entrance (http://www.youtube.com/watch?v=QSPcuZtynpY)

Death Mountain - The Legend of Zelda Twilight Princess
Mt. Rugged Theme - Paper Mario

I have loads more mountain themes I like, but at the moment those are all I can pick from the top of my head and I dont feel like browsing through all of my soundtracks to find some others :)

**edit** Cosmo Canyon - Final Fantasy VII

*scratches chin* I'd say that this is where Hilltop Zone from Sonic 2 belongs, rather than in the Fire/Lava theme thread.

Others include:

Himalayas - Ducktales
Ronso Mountains(?) - Final Fantasy X
Towering Mountain - Lufia 2
Mt. Tamaranch - Link's Awakening

3D dot game heroes - Klovis Volcano
YouTube - 3D Dot Game Heroes OST - Klovis Volcano (http://www.youtube.com/watch?v=nkFEbxKEjXY&feature=related)

Some FF oldies:

Nobuo Uematsu - Mount Ordeals (FFIV), and Mount Koltz (FFVI)

EDIT: BAH Arthur, you sneak, you already beat me to them. :P

In that case: the Red Mountain Zone track from Sonic Adventure (the exact track title name eludes me at the moment), even though it's more a 'volcano/lava' type theme, it still suits the mountainous environment. :)

I have:

DK Mountain - Mario Kart: Double Dash!!
Death Mountain - The Legend of Zelda: Twilight Princess
Icicle Mountain - Super Smash Bros. Melee
Snowpeak - The Legend of Zelda: Twilight Princess

Mt. Fear - Mystical Ninja Starring Goemon

I didn't realize this was an ancient skeleton when I clicked on it, but I was immediately going to say Suikoden's Distant Mountain. :)

Hill Top Zone - Sonic 2