You'll need the move flash
rock tunnel
Celadon City, but you must go via Cerulean -> Rock Tunnel -> Lavender -> Lavender to Celadon by pass.
Rock tunnel, Six island.
Watch leurois Pokemon leafgreen walk through part.
Rock Slide is not a TM in Leafgreen. In Leafgreen Rock Slide is a Move Tutor move and the Move Tutor is hidden somewhere in Rock Tunnel.
it is behind rock tunnel but u need surf to get there
it is the power plant which is somewhere near the rock tunnel entrance.
Rock tunnel is on route 7. Be sure you have the HM Flash handy and have beaten the Vermilion gym.
The power plant which is below rock tunnel you need surf to get there.
Victory Road, Mount Ember, and I think Rock Tunnel..
zapdos, at the power plant down from the rock tunnel you have to surf there
well first you need flash and you go to the rock tunnel and use flash and after you make it through the rock tunnel then you walk down the path and then you are in lavender town!