Where to find Onix in Gold, Silver & Crystal

Walk: Mt Silver (60%), Victory Road 1 (20%), Rock Tunnel (20%) + 2 more
NPC Trade: Violet City (Trade a Bellsprout)

• Mt. Silver (Top, 1F) — Walk
• Mt. Silver Cave — Walk
• Rock Tunnel (B1F) — Walk
• Union Cave (1F, B1F, B2F) — Walk

Onix in every game · Pokémon Gold, Silver & Crystal interactive map (Johto & Kanto)