You're a Pokémon researcher, and you were assigned to explore a cave for its resources and to research the Pokémon that live there.

You were pretty deep in the cave at this point. There'd be many crystals, and Sableye feeding on them, as well as some Geodude and some Onix coming from the ground every while.

You take out a notebook for research and write down the Pokémon species and what they would do as they live in the cave, until you feel a large rumble in the ground.

And then boom. A giant Steelix looms over you. And it was quite.. large for an average Steelix.. around 40 at least, much more than the average 30 foot.