lv. 60
level 75
Level 57
Level 89 in the new Pokemon games
R/S/E/FR/LG/D/P/Pt: Level 60 HG/SS: Level 75
u should cause groudon can learn eruption at level 80!
Heatran cannot learn fissure.
You have to get a Heart Scale from the Underground and then go to the house in Pastoria city near the lake and the guy is a move relearner so you go to the guy give him the heart scale then teach Groudon Fissure and walk off happy.
It learns Fissure at level 62.
Groudon can learn TM28- Dig.
its between lvl 75 and 80 cuz mine iz at 74 and i beat the game b4 and i no that he didnt go over 80 hope i helped ;)
Groudon can learn Solar Beam at level 50.
depends what version u hav if u have diamond and pearl it learns it at lvl 60 id its heartgold or soulsilver the it learns it at lvl 75