cliff, used in proper names, (kokuji)
垳 is a rare kokuji (Japan-made kanji) with no clear standalone meaning. It is used in proper names and associated with a cliff or steep place, but its meaning is uncertain outside of those contexts.
垳 is a kokuji, likely created in Japan by combining 土 (earth) and 行 (go) to represent a place name or a cliff. The exact historical development is uncertain.
The left side 土 means earth or ground, and the right side 行 suggests movement. Picture a path along a steep earthen cliff: the ground rises sharply beside the way.
For がけ, imagine a cliffside path where you must 'gake' (a made-up sound for a steep, rocky scramble) your way up the earth. The sound 'gake' cues がけ while the earth and path reinforce the cliff image.
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