Rainbow Springs Yellow Trail

Rainbow Springs, formerly known as Blue Spring, is a first-magnitude artesian spring formation in Marion County, Florida, United States, several miles north of the city of Dunnellon. Rainbow Springs is the focal point of Rainbow Springs State Park. The spring formation is the fourth-largest in Florida, and produces over 490 million gallons of water daily.

Rainbow Springs State Park is a Florida State Park located on U.S. 41, three miles (5 km) north of Dunnellon, Florida. It comprises 1,459.07 acres (5.9046 km2) upland (which includes around 100 acres (0.40 km2) of wetlands) and 12.83 acres (51,900 m2) submerged. The most significant natural feature is the first magnitude headspring basin which produces up to 600,000,000 US gallons (2,300,000 m3) of fresh water per day, forming The Rainbow River.