Tomas' story

You make your way to the entrance of the cave. It looks dark inside. You're definitely going to need some kind of light source.

Without lighting a torch you peer into the cave. You instantly recognise that it is not a natural formation. The cave opens up into a large chamber. The sides of the cave have been hewen as if from very primitive tools that made more use of brute strength than actual finesse. You see what appears to be some kind of mural or wall carving on one side of the cavern. However, you would need to use a torch to make out any of the details.

There is a passage which leads deeper into the earth and there are no apparent threats. There is a constant whistling sound as if wind is being funneled through the cave, so you suspect there may be another exit.

As you pass by the mural you can't help but notice that ut reads somewhat like a comic book. The first panel contains a crude depiction of what appears to be some kind of bipedal lizard-humanoid creature with a massive club like tail on its knees praying to some frog-like deity. The god seems to have answered the creature's prayers for in the next scene it and many others like it are battling hordes of undead creatures with a beautiful longbows. The longbow itself is a repeated motif and seems somehow significant.

As you travel deeper into the cave you come to a fork in the path. Carved on the wall is the same lizard creature with its hands stretched out to the left and right. To the left it is holding some kind of earth and to the right it seems to be holding smoke or perhaps air? Wind maybe?

Which passage do you choose?

You take the path to the right and after a few moments the path ends in front of a large, seemingly bottomless pit. On the other side of the pit there is an open portal. Spanning the pit is a very narrow path, it is only about one foot wide. The walls around the pit are full of holes.

What do you do?

@Sovelin: You make it about ten feet across the forty foot pit before your muscles begin to cramp up. Rather than head back you decide to press forwards. That was a mistake. You make it a few more feet before your arm gives out and you miss your next hand hold.