you can only jump down ledges.. Find another way
Chat with our AI personalities
come back to cinnibar island with a Pokemon with rock climb n climb the rock until u find it
Surf west of Cherrygrove, use rock climb and headbutt the trees. Catch it.
You're talking about HM 08 Rock Climb. You get Rock Climb when you get all 8 Kanto Badges. After this, Professor Oak gives this HM to you.
You need Hm Rock Climb, you need to obtain all 16 gym badges.
To get rock climb in HG/SS you have to beat Blue's Pokemon gym in Veridian City first. Then, go talk to Professor Oak. He will give you the HM rock climb. Note: If you trade a Pokemon from D/P/P , even if you taught it rock climb, you cant use it until you beat Varidian gym.