Topic: Stuck on Skyrim

I am on the Touching the Sky quest. I’m at the end the park where you exit the Darkfall passage and go into the forgotten vale. There are two ropes to pull. One opens the cave and the other is a trap with darts etc. once I open the cave Door i try to go through it and it’s blocked. As if I am hitting an invincible wall. I hadn’t really realized till this point I only had 4 saves and all the autosaves are inside the cave. I can’t fast travel and I can’t go back out the way I came in because it was a portal. Any help? Thanks.