Unit 4 was located 4.5 m north of Unit 1, the location selected based on the presence of a number of sand- stone discs and boulders. 1:1 Feature 1 was a disc (in- ventory # 52/3/D002) located on the south part of the east baulk. 1:1 Feature 2 was a broken sandstone jar (inventory #52/3/022) located in the northeast corner of the unit (Figure 24). 1:1 Feature 3 was a sandstone boulder near the centre of the unit and 1:1 Feature 4 was a group of smaller sandstone pieces to the north of Feature 3. 1:1 Feature 5 was a disc (inventory # 52/3/ D003) located near the southwest corner of the unit and 1:1 Feature 6, a partial disc, (inventory # 52/3/D004) lay just to the northwest of Feature 5 (Figure 23). The last feature, Feature 7 was a sandstone boulder along the west baulk abutting Feature 6. The unit was 4 m E-W x 2.5 m N-S. The colour of the matrix on the surface of Unit 4 is 10R 4/3 weak red. The ground surface at this location was uneven, the east and west sides were several cm higher than the centre of the unit. The east side of the unit excavated down >20 cm and 10 cm at west end in order to level out the trench.
Prior to excavating, the disc labelled 1:1 Feature 5 (52/3/ D003) was removed and on the underside a damaged pommel was discovered, similar to several other such ‘lids’ found at Site 52. No artefacts were discovered un- der this object. The disc, 1:1 Feature 6 (52/3/D004), was also removed from the unit and, similarly, had a pom- mel on the underside. 1:1 Feature 1 (52/3/D002) was also removed from the unit. Under this disc was an arrangement of sandstone angular cobbles, of varied size, some larger than a fist, grouped together. These cobbles appear to run out of the southeast corner of the unit in a northwest direction. The cobbles were removed but no further artefacts were encountered.
As the first spit was removed in Unit 4 eighteen ce- ramic sherds with the remains of a resin coating were found along north baulk (cat. 402) and two small plain quartz-tempered ceramic sherds (cat. 401) were found under 1:1 Feature 2, the stone jar (52/3/022).
With the removal of 1:1 it was apparent that there was a linear arrangement of cobbles running diagonally out of the west baulk into the south baulk – a large tree root also ran through this area. Ten further ceramic sherds (cat. 406) were found near the west baulk in the area under 1:1 Feature 6.
In excavating the second spit in Unit 4, 1:2, further ceramic sherds (cat. 407) were encountered including seven quartz-tempered sherds, some with resin coating from the northwest corner of the unit. Seven similar sherds (cat. 408) were found in the northeast corner of the unit near the broken jar 52/3/022.
In Unit 4 the stones that ran in a line out of the West baulk were removed (the line of stones under the discs labelled as 1:1 F5 and F6). During the excava- tion of 1:2, the stone feature called 1:1 Feature 3 was removed. The stone had fractured into several piec- es and the top portion was easily removed. Several more features were apparent with the removal of 1:2. These included 1:2 Feature 1, two small sandstone boulders in the center of the unit south of 1:1 Feature 3 and 1:2 Features 3, 4 and 5 also sandstone blocks near the south baulk in the centre of the unit. 1:2 Feature 2 was a collection of stones along the east baulk. In removing spit 1:3 three quartz-tempered ceramic sherds (cat. 410) were uncovered along the west baulk of Unit 4 and eight similar sherds (cat. 409) were found near the north baulk in the western part of the unit. Three new features were un- covered in 1:3 including 1:3 Feature 1, a small sand- stone fragment near the west baulk and Features 2 and 3 also small pieces of sandstone near the mid- dle of the south baulk. A quartz pebble was recov- ered from the sieve (cat. 412). The matrix was clayey and the colour was recorded as 10R 4/4, weak red.
The surface of 1:4 in Unit 4 revealed mostly natural soil across the unit. A number of features previous- ly exposed remained in situ, including 1:1 Feature 3 and 1:2 Feature 1, near the centre of the unit. These were removed and nothing was found beneath them. Along the south baulk of the unit 1:3 Features 2 and 3 were further exposed. These two features were adjacent to one another and comprise four sand- stone boulders about 20 cm in diameter. Nothing was found beneath this collection of stones and the entire unit was revealed to have met natural soil. Four small ceramic sherds (cat. 411), similar to the others found previously, were recovered in 1:4.