ibex
ural
The first two letters of the name, Argon.
Great smokey mountain railroad
RABBITRabbit Mountain is an eroded volcanic outcrop in the Wrangell Volcanic Field, Yukon Territory, Canada
Ox
The mountain range that begins with A and is four letters long is the Alps.
Headache and heartache begin and end with the letters he.
Og.
tj, rj,ej
ai, ox
Ben Nevis