"There is a blockage leading down that way, so I don't think this is the main tunnel leading to the chamber. If you follow us back, then you can take the other tunnel down the left side and go to the chamber. I think that would be better."
Mark glanced back at the dark tunnel and hummed as he thought about what to do. It was a long way back, and it would just be a waste of time to turn back now when he had already come this far. Mark reached out his hand and touched the wall beside him.
Knock! Knock! Knock!
"This might work."
Mark muttered as he knocked on the wall for a second time. There was a hollow sound from the other side of the wall, and Mark realized that the two tunnels might be connected through the wall! Ant tunnels like these are usually connected for a few hundred meters before they fully branch out and separate to different sides of the cave. He pulled back his hand and unleashed a punch!
Boom!