Mountainous

a.	1.	Full of, or containing, mountains; as, the mountainous country of the Swiss.
	2.	Inhabiting mountains.
	3.	Large as, or resembling, a mountain; huge; of great bulk; as, a mountainous heap.

Adj.	1.	mountainous - having hills and crags; "hilly terrain" Synonyms: cragged, craggy, hilly
	2.	mountainous - like a mountain in size and impressiveness; "mountainous waves"; "a mountainous dark man"
	3.	mountainous - containing many mountains

Atlantean, Brobdingnagian, Cyclopean, Gargantuan, Herculean, Homeric, abysmal, alpen, alpestrine, alpigene, alpine, amplitudinous, astronomic, astronomical, awesome, boundless, bulky, colossal, cosmic, craggy, elephantine, enormous, epic, extensive, formidable, galactic, giant, giantlike, gigantic, heroic, high, hilly, huge, immeasurable, immense, infinite, jumbo, king-size, knobby, large, mammoth, massive, massy, mighty, monster, monstrous, monticuline, monumental, mountained, outsize, overgrown, prodigious, profound, rolling, sizable, spacious, staggering, steep, stupendous, subalpine, titanic, towering, tremendous, vast, voluminous, weighty