The ice was piled mountainously, in a barricade that meant a long siege to penetrate.
"Grenfell: Knight-Errant of the North"
Fullerton Waldo
Great winds formed the base, winds of brown and blue and purple, piled mountainously upon each other in motionless coils, and so soft that the upright columns of the structure plunged easily and deeply into them.
"A Prisoner in Fairyland"
Algernon Blackwood
A ridge of inky water rushed foaming mountainously on his board, and behind that ridge came a vast warty head that gurgled and groaned.
"Irish Fairy Tales"
James Stephens