Odd Dream

One day I'm walking a beach like others weird thing is lights like fireflies could be seen all around me. I continue walking down the stretch of beach, then I fall through the earth. I eventually arise from the landing on a large lake covered in ice, I start to walk on the blanket of ice but slip along the way trying to reach the shore... Then Out of nowhere Ice pillars arise from the surface, and then im trapped inside... (After that I usually wake up breathing hard and holding my chest I have yet to make it pass that part yet, I never did see the firefly lights again.)

I have this dream a lot it was an odd dream, tell me what you think?