Help with the worm

[Jetsetlemming]

Spoiler below!

At the very end of the second worm encounter there's a room with a door covered by a metal sheet, a valve, and a damaged wooden support beam in the center. To stop the worm...

Spoiler below!

Break down the beam with your pickaxe.

On that note, people, don't go idly reading topics, especially those in the help or feedback sections, if you haven't beaten the game and aren't actively looking for help or discussion on a specific target. You're just begging to be spoiled at a later event.