Just entered in that dangerous place I saw a high waterfall column in the center of the cave. After I made the zone secure, I started to build a long bridge to reach the waterfall. Having reached it, I built stairs all around the waterfall until a wood platform. Near that platform there was a box that was spawning venomous spiders, so I decided to stop my exploration. I came back to the cave with armor, weapons and enough food. I decided to climb faster through the waterfall instead of using the stairs, but I was hit by an arrow that killed me. So I abandoned the mission because I lost everything in my inventory. Another chapter has begun: stop exploration without a valid plan.