Mount Royal (8PU35) is a U.S. archaeological site close to where the St. Johns River exits from Lake George in Putnam County, Florida.

It is located three miles (5 km) south of Welaka, in the Mount Royal Airpark, off County Road 309 on the eastern bank of the St. Johns River.

Mount Royal was occupied again after 750, and after 1050 it grew into the main town of an important chiefdom with connections to the Mississippian culture.

A causeway or avenue, still visible at the end of the 19th century, but since obscured, ran north from the mound to a rectangular pond.

[4] The Mount Royal site entered the archaeological record in 1766, when John Bartram and his son William visited it.

[5] On William's return to the site, he found that an orange grove and palms and live oaks that had flanked the avenue in 1766 had been cleared in preparation for planting.

The 19th-century archaeologist Samuel Foster Haven called the reports published by the Bartrams "the earliest 'careful and intelligent' descriptions of a native American Indian mound.

[7] He published his findings at Mount Royal in two parts in the Journal of the Academy of Natural Sciences of Philadelphia in 1894, a total of more than 250 pages.

[9] In the early 1950s John Goggin and his students from the University of Florida collected potsherds and other artifacts from the ground surface of the middens and other areas surrounding the Mount Royal mound.

By this time the avenue reported by the Bartrams and Moore was no longer visible from the ground, but did show up in aerial photos.

Orange period people were hunter-gatherers, harvesting shellfish and fish from the rivers and coastal waters of northeastern Florida, gathering wild plants, and hunting.

Mount Royal was such a ceremonial center for centuries, perhaps the largest over a wide area along the St. Johns River.