I just finished reading it and enjoyed it.
I liked the descriptions of the island. Part of the island had a leafy plant you could eat? Possible ancient habitation?
There are sections after each chapter that discuss the basis for including some of the artifacts and history into the fictional story. These sections are on grey pages to help separate them. I liked this format.
There are some artifacts I was not aware of. For example, what may be the remains of a hair curling iron that were found at the Seven Site.