Caesar's Camp, also called Schapsbury Hill and Shasbury Hill, was a square, Early Iron Age, British (not Roman) fort site of c. 500 BC, south of Bath Road, about halfway between Heathrow Road and Hatton Road, and a bit north of due east of Heathrow Hall.
Fern Hill was another ramparted prehistoric site, represented in 1944 by a roughly circular cropmark about 250 feet diameter, near Hatton Cross.