A demi-piper all Proper, garbed in a proper tartan of the Clan MacLennan.
Strictly, it is not the Crest of the Clan but of the Chief – it is part of his Arms and as such his personal property. He gives his permission for a clansman to wear it enclosed within the belt and buckle and it is legally known as a clansman’s crest or badge.
Dum spiro spero (Latin: While I breathe, I hope)
More about the origins of the motto at wikipedia.org
Druim nan Deur (The ridge of tears)
More about the Ridge of Tears in Chapter 5 of A Guide to some MacLennan Places across Scotland
Arms of the Chief
Or, a heart of Gules between two passion nails joined in base Sable, on a chief Azure a stag’s head cabossed between two antique crowns, all of the First. They are the personal arms of the Chief and may not be used by anyone else.