The Gulf Stream usually refers to the warm oceanic surface current that originates from the Gulf of Mexico and flows along the eastern coast of the United States as well as Canada and eventually moves towards the middle of the Atlantic ocean.
The speed of this warm water current is drastically very high, which is roughly about 30 million cubic meters per unit second, flowing through the straits of Florida.
If a raft is tried to drift on these currents of Gulf Stream right from the Florida coast, then the raft will be carried forward at a tremendously faster speed and it will eventually reach the middle of the Atlantic ocean.
Stonehenge is a prehistoric monument in Wiltshire, England about 2 miles (3.2 km) west of Amesbury and 8 miles (13 km) north of Salisbury. One of the most famous sites in the world, Stonehenge remains of a ring of standing stones set within earthworks. I hope this helps!! :)