Oreburgh Mine - Bulbapedia, the community-driven Pokémon encyclopedia

9 Ways to Evolve Onix - wikiHow

Onix - Pokemon Diamond, Pearl and Platinum Guide - IGN

Let's Play Pokemon: Platinum - Part 26 - Onix & Mt. Coronet

Who decided that Onix should have a ridicuously difficult catch rate?

Unexpected Shiny Onix during the grind for the Pokémon League. : r/PokemonHGSS

Shiny Encounter in Renegade Platinum!!! : r/nuzlocke

Pokemon Platinum :: Full Walkthrough

Onix de Crystal & Steelix de - Pokémon Platinum Monotype Steel #02 (Nintendo DS)

Pokémon Card Database - Classic Venusaur - #10 Onix

Pokémon TCG Reveals Pokémon Card 151: Onix Brings Kanto Vibes