It included multi-spectral aerial photography and geophysical magnetometer survey .
The Heslerton Parish Project studied 10 square kilometres ( 3.9 sq mi ) around the village of West Heslerton in order to set the excavations in context .
Heslerton Parish Project included multi-spectral aerial photography and geophysical magnetometer survey .
The Heslerton Parish Project studied 10 square kilometres ( 3.9 sq mi ) around the village of West Heslerton in order to set the excavations in context .