3 adjectives to describe mastodon

One, long named Big Bone Lick, was famous because there were scattered about it in incredible quantity the gigantic remains of the extinct mastodon; the McAfees made a tent by stretching their blankets over the huge fossil ribs, and used the disjointed vertebrae as stools on which to sit.

"Only a frozen mastodon," he grinned sheepishly, as they came to his side.

Statues of colossal size, and arches of Titanic strength and power, adorned the portals, the pass-ways, the temples of this metropolis of ocean, guarded as were these last by the effigies of griffin and dragon, and winged elephant and lion, and stately mastodon and monstrous ichthyosaurus, all white as gleaming spar.

3 adjectives to describe  mastodon