Colonel Silver's Camp
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Colonel Silver's Camp (シルバー 小隊 仮設 キャンプ, Shirubā Shōtai Kasetsu Kyanpu; FUNimation "Colonel Silver's Camp"; Literally meaning "Silver Platoon Makeshift Camp") is the temporary base of Colonel Silver and his platoon.
Son Goku fought against Silver and had his Kinto Un shot down in this location. After he defeated Silver, he used a Red Ribbon Army plane and a robot pilot to take him to the location of the next Dragon Ball.