A new possible income.

About three Hours later with around 15 more Torches burned, the Guards managed to make a rough estimation of the Cave's size.

They figured out that the bottom part of the Cave, is around 40 meters across from one point to the other. The triangular form which starts on the bottom right side, stretches about 30 meters before it makes another sharp turn towards the exact opposite direction. However, that sharp turn is followed by a Wall that is a lot shorter before it meets the top Wall of the Cave. It might sound wildly confusing, but it really isn't if you read it a couple more times and try to think of a visual representation of it in your mind.