Shipwrecks, Sinkholes, and Fossil Finds | Exploring Alpena 

Thank you for this presentation. Very informative.

Wait ive been going to rockport for years. Where are these back country campsites? I thought there was no camping or overnight parking there?

There seems to be a lot to do in this one park.

I want to know the warning signs of a sinkhole are. My neighbor had one back in 2001 and now shes hearing all kinds of cracking and breaking noises in her house. She also has garbage cans that rumble or shake. My house has been making huge creaking noises it has never made before. I just wonder if the sinkhole is going to open up again.

Great History of Michigan…Just wish people would realize the Climate of our Planet has always changed long before we even existed and will continue to change. Michigan has gone from Salt water seas to buried in Glaciers and most everything in between and and will continue long after Humans no longer exist.