Body spans multiple valleys or hills

Seps

capable of encircling entire mountains or valleys within its massive coils

Yamata no Orochi

Its massive body is said to stretch across eight valleys and eight hills, creating a landscape of its own wherever it resides.

Lambton Worm

large enough to coil itself around a hill

Namazu

Its size is said to be so vast that its body spans the length of the Japanese archipelago

Typhon

His lower body consisted of massive coils of vipers, and it was said that his arms could stretch to opposite horizons when spread.

Kur

a vast brooding mountain-mass beneath the earth

Daidarabotchi

The sheer scale of Daidarabotchi is difficult for the human mind to comprehend.

Ziz

The Ziz's presence in the sky is akin to a living, breathing mountain range