My Underground Ravine Return

After a while me and a person named Roxandsora or something like that went to the cave again to check the ravine that i found with Heavensgate. We walked around the edges of the ravine like how i did and went to the spot where i saw the creeper. Thank goodness he was gone. We went through an already made tunnel that we followed. We found coal and iron and some redstone. We then found a lava lake with a waterfall running through it making obsidian. Rox later fell into the lava when mining some coal but I didnt leave. I found a diamond and I took every precaution to make sure it didnt fall into the lava. I got it safely. Then i left the cave and never say it again when the mining world reset. So many things to be mined such little time and tools.