taru-adjective, adverb taking the 'to' particle
towering; lofty; precipitous; jutting upward
Literary description of mountains, cliffs, or structures that rise steeply and stand out sharply. Often used in classical or poetic contexts.
突兀たる山々が連なる風景は、まるで水墨画のようだ。
The landscape of towering mountains stretching on is just like an ink-wash painting.
その城は断崖の上に突兀としてそびえていた。
The castle stood towering precipitously atop the cliff.