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