The Spanish, like the Indians before them, seem to have been more interested in keeping away from the tar than investigating what was in it. It wasn't until 1863, when a Major Hancock purchased the area, that any investigating took place. Those early probings were probably for oil, but they uncovered bones. Around 1913 the first real excavations started. In 1972 George C. Page sponsored the opening of the fine museum that bears his name.
Excavations continue under the direction of museum staff.
Some are stored, some are used in reconstructions. All this work is displayed in the museum, with only thin glass separating the technicians and scientists from the viewing public. The million-plus bone total is still growing every year. It is a painstaking process, with years needed to carefully examine just a few square meters. The present excavation, Pit 91, is open to public viewing.