Im doing my first playthrough of halflife 1, goldsource, and im at the chapter blast pit, restored power at the end of that boss thing, and now my guide is telling me
Blast Pit - Half-Life Guide - IGN
Half-Life - Chapter 6: Blast Pit - YouTube
Blast Pit - Walkthrough - Half-Life - Danny's Half-Life Information
Half-Life Walkthrough Blast Pit
Half-Life Walkthrough: Blast Pit Part 1 - YouTube
Blast Pit - Walkthrough - Half-Life - Danny's Half-Life Information