The earthen ramparts of the sub-oval shaped fort are today largely overgrown with a double belt of mature beech trees, planted in the early 19th century.
Inside the ramparts the enclosed area is a level plateau 10 acres (4.0 ha) in area, treeless and given over to grazing.
There are four entrances to the central enclosure, though only one is thought to be original.
Most of the ramparts still remain well-preserved, though along a 230 metres (750 ft) section of the southern side the ramparts are missing.
The absence of earthworks in this section today is believed to be due the demolition of ramparts to make way for buildings constructed between the 16th and early 19th centuries, together with associated livestock enclosures and allotments.
However, there has also been speculation that the earthworks were always much more modest along this section, providing ample opportunity to exploit as sites for domestic habitation.
As properties were built and later enlarged or replaced with more substantial buildings, and their associated allotments became gardens and orchards, the residue of the original ramparts were all but rubbed out and any remaining ditches almost completely infilled.
The ramparts on the south-east and south-west quadrants consist principally of two sets of banks (inner and outer) each enclosing a large ditch.
On the north-east and north-west quadrant there is a single ditch bounded on each side by a bank.

The inner bank is on average 8 metres (26 ft) wide with a height that varies between 0.8 metres (2.6 ft) to 2 metres (6.6 ft).
Its front slope is angled at about 35 degrees and the rear slope at 50 degrees.
The broad, flat top of the bank does not appear to have been lined with timber or stonework.
The adjoining inner ditch ranges from 6 metres (20 ft) to 12 metres (39 ft) wide and 2.5 metres (8.2 ft) to 3 metres (9.8 ft) deep, in the shape of a steep-sided V with an inner slope of about 50 degrees.
The outer bank is less distinct but is still visible on the northern side of the fort.
The banks and ditches to the south-east are particularly well-preserved extending the ramparts for a distance of about 90 metres (300 ft).

The outer ditch and banks of the north-west quadrant do not follow the curvature of the inner rampart over its whole length.
The final 53 metres (174 ft) of the ditch runs almost straight out in a north-north-easterly direction.
The triangular section so created is bounded on its northern edge by a shallow ditch and bank.
The earthen ramparts of the sub-oval shaped fort are today largely overgrown with a double belt of mature beech trees, planted in the early 19th century. Inside the ramparts the enclosed area is a level plateau 10 acres (4.0 ha) in area, treeless and given over to grazing. There are four entrances to the central enclosure, though only one is thought to be original. Most of the ramparts still remain well-preserved, though along a 230 metres (750 ft) section of the southern side the ramparts are missing. The absence of earthworks in this section today is believed to be due the demolition of ramparts to make way for buildings constructed between the 16th and early 19th centuries, together with associated livestock enclosures and allotments. However, there has also been speculation that the earthworks were always much more modest along this section, providing ample opportunity to exploit as sites for domestic habitation. As properties were built and later enlarged or replaced with more substantial buildings, and their associated allotments became gardens and orchards, the residue of the original ramparts were all but rubbed out and any remaining ditches almost completely infilled. The ramparts on the south-east and south-west quadrants consist principally of two sets of banks (inner and outer) each enclosing a large ditch. On the north-east and north-west quadrant there is a single ditch bounded on each side by a bank.
The inner bank is on average 8 metres (26 ft) wide with a height that varies between 0.8 metres (2.6 ft) to 2 metres (6.6 ft). Its front slope is angled at about 35 degrees and the rear slope at 50 degrees. The broad, flat top of the bank does not appear to have been lined with timber or stonework. The adjoining inner ditch ranges from 6 metres (20 ft) to 12 metres (39 ft) wide and 2.5 metres (8.2 ft) to 3 metres (9.8 ft) deep, in the shape of a steep-sided V with an inner slope of about 50 degrees. The outer bank is less distinct but is still visible on the northern side of the fort. The banks and ditches to the south-east are particularly well-preserved extending the ramparts for a distance of about 90 metres (300 ft).
The outer ditch and banks of the north-west quadrant do not follow the curvature of the inner rampart over its whole length. The final 53 metres (174 ft) of the ditch runs almost straight out in a north-north-easterly direction. The triangular section so created is bounded on its northern edge by a shallow ditch and bank.
Cholesbury Camp