Jamie accepted the hand up, and steadied himself against the rock for a moment while he shook his head and cleared it of the worst of the fumes, then picked up his sword. "Aye, lets!"

The Macra, deprived of the gas it consumed, twitched a little but no longer appeared to be a danger as long as one stayed away. However, it still filled the corridor, allowing no room to get through.

"I hope we don't find ourselves back where we started," Jamie mutters as he starts to feel his way along the rock wall.