Which Oxfordshire hillfort? One main bank and ditch enclose 3.2 hectares, and the only way in faces west (left). Bigger clue: a famous chalk figure lies 170 m NNE. Answer tomorrow.

Scheduled Monument: look, don't detect or dig.
shadowmarkmaps.com/how-to-read-lidar-maps

The first deserted medieval village ever photographed from the air: Gainsthorpe, Lincolnshire, by O G S Crawford in 1925. In LiDAR its sunken tracks still run between the house plots.

Scheduled Monument: look, don't detect or dig.
shadowmarkmaps.com/sites/gainsthorpe

Old Sarum, Wiltshire, in LiDAR. The Iron Age hillfort is roughly oval, up to 580 metres east to west and 460 metres north to south.

Old Sarum is a Scheduled Monument: look, don't detect or dig.
LiDAR © Environment Agency 2022, OGL v3.0
shadowmarkmaps.com/sites/old-sarum #archaeology #LiDAR

For Halloween, a long barrow in LiDAR: West Kennet Long Barrow, Wiltshire. The wedge-shaped mound is 104m long, up to 25m wide and up to 3.2m high.

Scheduled Monument: look, don't detect or dig.
LiDAR © Environment Agency 2022, OGL v3.0
shadowmarkmaps.com/sites/west-kennet #Halloween #archaeology

Most sites we post are Scheduled Monuments. In England, detecting on one without Historic England's written consent is a criminal offence, and digging needs Scheduled Monument Consent.

So: look, don't detect or dig. Pictured: Hambledon Hill.
shadowmarkmaps.com/scheduled-monuments #archaeology

Yesterday's LiDAR puzzle was Maiden Castle in Dorset. After several remodellings, the ramparts ended up as three banks and two ditches around the hilltop, with an extra bank and ditch on the gentler southern slope.

Scheduled Monument: look, don't detect or dig.
shadowmarkmaps.com/sites/maiden

Where is this? A hillfort in Dorset, seen in LiDAR. Answer tomorrow.

It's a Scheduled Monument: look, don't detect or dig.
LiDAR © Environment Agency 2022, OGL v3.0
shadowmarkmaps.com/how-to-read-lidar-maps #archaeology #LiDAR

The village that disappeared. At Wharram Percy in North Yorkshire, LiDAR still shows the house plots and yards of a medieval village that was abandoned centuries ago.

Scheduled Monument: look, don't detect or dig.
LiDAR © Environment Agency 2022, OGL v3.0
shadowmarkmaps.com/sites/wharram-percy

A Roman road cutting a Bronze Age barrow. At Oakley Down in Dorset, the raised bank of Ackling Dyke clips the edge of a disc barrow, one of a cemetery of barrows that LiDAR shows as rings and mounds.

Scheduled Monuments: look, don't detect or dig.
shadowmarkmaps.com/sites/oakley-down #LiDAR

Three rings of ramparts around a Dorset hilltop. This is Badbury Rings, an Iron Age hillfort, in LiDAR: the trees fall away and the banks and ditches stand out.

Scheduled Monument: look, don't detect or dig.
LiDAR © Environment Agency 2022, OGL v3.0
shadowmarkmaps.com/sites/badbury #LiDAR