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First, I presumed that "on-mountain" is short for "on-mountain accommodation", in which a hyphen is required to cojoin a double adjective. If you believe this is not the construction, it will have to be "On the mountain", spelled out.
It has taken a long time since typewriters went out of vogue for lower case to become standard in titles, but that is certainly true now for up-to-date publications (certainly it applies to wiki titles, which are already highlighted by three formatting devices: bold face, larger font and separate line). "Title case" Removes a Whole Level of Meaning From The Marking Of Proper Nouns.
Editorial comments are in standard use on wikis, and can be seen only in edit-mode. They look <!--like this-->
You can easily sign your name with four tildes (~~~~)Tony 17:26, 20 June 2009 (EST)
Are you the "owner"?
Or perhaps I should say "Are You The "Owner" ... If so, I suggest you tell your mate Ian S to cool it. Otherwise, there will be legal trouble. Wikis can be dangerous places, so it is best to make clear to all parties guidelines for avoiding abuse in article space and personal talk pages. It is a public forum. Tony 12:39, 21 June 2009 (EST)