Is the head facing the passage? Is it firmly in place? Could we try to knock it down?
Added 1 minute later
-- Oh, that's right! -- Henry said, pleased with the idea. -- What's the distance? More than ten ? And will the Slime be able to reach it?
-- That's a good idea! It might work! Miss Nikta, I'll position myself right above it, just a few centimeters away; use my voice as a reference!
Небо – угроз не слышит
Небо – ведёт особый счёт
Небо – тебя найдёт