Here's another shadow of the previously mentioned cave skellie idea. This image also spawned a further development in the story:
He's spotted me and now his confusion seems lessened by having someone to focus on. His erection wanes a little and now starts to drip blood as he advances directly towards me. I continue to retreat, weaving in and out of the stalactites, stalagmites and columns, attempting to outmaneuver him. His arms are outstretched wide as he continues pursuit, there's no way around. Behind him I can see daylight diminishing as he forces me deeper and deeper into the cave.
I'm even more curious now to see where this will all lead. I'll keep you posted as best I can.