Talk:Columbia Hills (Mars)
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[edit] Challenger Hills?
Why no Challenger Hills? —Preceding unsigned comment added by 72.67.35.112 (talk) 19:34, 24 January 2008 (UTC)
Why no Challenger Hills? —Preceding unsigned comment added by 72.67.35.112 (talk) 19:34, 24 January 2008 (UTC)