KanjiJLPT N4
Gone

gone, past, quit, leave, elapse, eliminate, divorce

Mnemonic

You staked your tent into the earth for the night. By dawn, the earth has crumbled away beneath you, and the tent is gone — swallowed by a massive sinkhole. You wake up falling, watching your campsite vanish above you into nothing.
Additional thoughts
Picture the tent sinking straight down through crumbling earth — the visual of something solid disappearing reinforces 'gone.' The earth radical sits at the bottom, the tent sits on top, and everything collapses downward.
Quick recall
A tent on earth collapses into a sinkhole — everything is gone.

Details

The keyword for 去 is gone. This kanji conveys the idea of leaving, departing, or passing away from a place or state. It carries the sense of something that has moved away or elapsed, such as time that has passed or a person who has left. In its most fundamental meaning, it represents the act of going away or the state of being removed from the present.
On'yomi
きょ、こ
Kun'yomi
さ.る、-さ.る