The operative word there is practical. Obviously you're aware of that, but I thought I'd mention on the off-chance that some of the internet's resident idiots actually read these threads.
The map there is very very nice. To make sure I remember the common sense principle SRK just used, I'll try and apply it to your map.
I'm not sure about the length of that ladder, for one thing. Even if you've just descended an ear-poppingly huge distance, I think it should end a little closer to wall. Next, the light around the ladder is a brilliant idea, congratulations. I can see you've put some thought into your fungus arrangement too, as the green stuff is closest to the light. Well done on that.
There's some cobble stones there at the bottom though. Why? Truly, why?