Cliffs and waterfalls

This dream started with me and a group of friends sitting on top of a cliff. I remember that we couldn't see all the way down for some reason but we could hear like a hissing sound and all of us were wondering what could be making such a sound down there. The cliff itself was rocky with sparse grass growing here and there. I can't remember how high up we were but there was a mist that was rising from below the cliff. A friend and I both had enough nerve to go over the cliff and see what the sound was. We used jetpacks or something like that to float all the way down and examine the source of the noise. As we floated down, the cliff wasn't as high as we thought and there was a beautiful view upon descending. There was a beach where the waves were crashing and a huge cave where there was a waterfall cascading over the entrance. The mist from the waterfall caused a colorful effect on the cliff wall that was spectacular. We both went speeding inside the cave and found it was a long tunnel with a opening at the other end. Along the left hand side of the tunnel there was a huge opening that was dark and as I passed by it speeding, I heard a rasping sound. I got through ok but as I reached further into the tunnel I noticed that my friend wasn't with me. I saw that something had grabbed her and was proceeding to strangle her although I never heard her scream or fight with the thing. As soon as I stopped, the thing saw me and started towards me with amazing speed which caused me to hurriedly fly out of the tunnel almost losing control and slamming into the wall. I made it out and started ascending when I felt something hit my leg and I looked down. That's when I saw what it was a cyclops with a frog-like tongue that caught my leg and was pulling me slowly towards him. The cyclops was huge, I'd estimate at about 20' high and powerfully built however it seemed that he didn't belong in this setting because he was animated kind of like Simpson's looking and everything else was crystal clear reality. I got out a knife and cut his tongue and flew off into the clouds but somehow I knew he was still following me. I was speeding as fast as I could into the clouds and then when I finally felt safe, I felt a tug on my leg and as I looked back... I woke up.

Didn't change my life but this was one of those vividly featured dreams. The landscape once I went over the cliff looked like helicopter views when you see them on movies, a very free feeling and crystal clear images.