mountainousness
nounEtymology From mountainous + -ness (“a state of being”, suffix forming a noun).
1
The quality of being mountainous.
- […] according to Polybius, the Arcadians, owing to the mountainousness of their country, and the severity of the weather, were very rugged and unsociable.1808, Allan Ramsay, “An Inquiry into the Propriety of the Rules Prescribed for Pastoral Poetry”, in The Gentle Shepherd, a Pastoral Comedy; with Illustrations of the Scenary: […], volume 1, Edinburgh, page 182: