The importance of the archaeological site of Crystal River has been known since at least 1859, but it was excavations in the site’s burial mounds by C.B. Moore in the early twentieth that made the site famous among archaeologists. Later, Ripley Bullen provided additional insight on several of the other mounds and the village at Crystal River, and he and Adelaide Bullen supplied the first account of the nearby site of Roberts Island. Unfortunately, however, the excavations of both Moore and Bullen are underreported, and there has been little work at the sites using modern archaeological methods. Recent work under the auspices of the Crystal River Early Village Archaeological Project rectifies this with research program that combines the analysis of previous collections with minimally invasive new field work. The latter included detailed topographic mapping, coring and shovel testing, geophysical resistivity survey using ground-penetrating radar and electrical resistance, Bayesian modelling, and small-scale test excavations. As a result of these investigations, the sites are among the most thoroughly dated of any Woodland-period sites in eastern North America.