Seventh.
When I got back to my truck I decided it would probably be best if I parked out on the main road, away from where I had decided to stay for the night. I took the bedroll and my backpack with me and headed back towards the cave that I had found with the pentagram slab outside. The light was fading so I pulled out my flashlight. When I got to the stairs I dropped my bag and bedding at the top and slowly descended. I needed to know that there wasn't anyone already using this place before I set up camp.
I shined the light at the stone slab and then into the cave. I yelled "Hello!" into the entrance but heard only my own voice echoing back. The deeper in I walked the wider and higher the room became. There were a few chambers with small holes that allowed moonlight to stream through. At the end of the cave was a wrought iron fence with no obvious purpose. I couldn't help but wonder what this place had been used for. There were footsteps in the dust that looked fairly new but there were no other signs that anyone had been in here recently.
I went back out to retrieve my things and decided that it might be best if I stayed just inside the first bend in the entrance corridor, just far enough that I couldn't be seen, but close enough that I could make a quick escape if I had to. I set up my bedroll, laid with my back up against the rocky wall and slept. I woke shortly after dawn and walked a little further into the cave. I had a few bottles of water in my pack so I was able to wash up, my hair would have to wait for a proper shower. I tied it up with an elastic and set about rolling up the sleeping bag and mattress. I held the deflated mattress in my hand and searched the ground nearby for the string to tie it but I couldn't find it. I reached for my flashlight in my pack but then realized that something wasn't right. I should have had plenty of light coming in from the entranceway.
I stood and walked around the corner stopping short. The entrance to the cave was blocked. I ran over to it and put my hand against the rock, and once again I felt it vibrate. It must have been the same large slab that had been outside the door. I tried to find a crack between the rocks but the seal was tight. I pushed against it and I thought I felt it give a little but then fall right back in place. I tried again but this time it didn't budge. I ran back to my pack to see if I had any blood with me and then remembered that I had used it all to regain my strength the day before. I was trapped and panicked. I started screaming for help but I knew it wouldn't do any good. I was in the middle of the woods and there was no one out there.