First, a map of the area:
It was a bit difficult to scan this without breaking the spine of the book so apologies for the middle bit. 17 in the top right of the map is the Kastas tumulus where the tomb currently being excavated is. To the left of this you can see from the contour lines that there is a small, isolated hill. This is Hill 133, a prehistoric settlement site of the late Neolithic - early Bronze Age, although there was probably occupation of the hill until the founding of Amphipolis in about 465 BC. The outer red line is the city walls and the inner red line is the acropolis.
This is hill 133, the Kastas tumulus is the white mound to the right of it, and the text of the Kastas site.
Hopefully you can read it, but the gist of it is that:
1/ the perimiter wall was first discovered in 1965, but no date is given for its construction.
2/ about 70 graves 'were investigated' (implying there were more not investigated) over the surface of the mound, which goes a long way to explain the anomalies in the scan of the mound. Some of these graves date from the early Iron Age. We are therefore not looking at a mound constructed over the tomb being excavated, but a burial mound appropriated by the tomb builders
3/ the mound itself is constructed of layers of fine sand and hard earth with the implication that it was built up over a considerable period with material brought from the riverside.
4/ the structure found on the summit of the mound (10.15 metres on the north side) was built of unworked stones sloping inwards. The interior of the structure was filled with stones, suggesting it was a base for a grave marker. The text suggests a Macedonian date. However, if you look at the bottom of the map, 22 indicates the position of the Lion (which the text suggests is a monument to Laomedon). So it would seem rather unlikely that someone would bother moving the Lion about 2 km southwards. It's current position, even if not accurate, but by the river, would make it visible to anyone coming upriver from the port of Eion. Incidentally, the ancient bridge was much higher up at 6. The city gate at 4 gave access to the Via Egnatia.
Finally, about the tail end of the previous post. The text says
7 on the map is the sanctury of Klio, south across the small valley from this is the sanctuary of Attis. You can see both the small valley and the sanctuary of Attis in the picture.the historian Marsyas, who came from Philippi: "There is a sanctuary of Klio at Amphipolis, built opposite the monument of Rhesos, on a hill". The cult of the king of Thrace, Rhesos, son of Eion and Klio, whose horses were whiter than ths snow and ran like the wind, is the earliest known cult at Amphipolis, and is attested in Homer.
Enjoy!
PS I've just discovered how to get big pictures in pothos posts (dumb I know), so for anyone else wondering, I'll post something in the 'how to' board tomorrow (it's too late now).
PPS I forgot to mention that direcrly south of Hill 133 is a Hellenistic cemetry (18). Directly to the east of the acropolis is the Classical cemetry (19). To the south of this at 20 and 21 are two 'Macedonian' tombs. There is a further cemetry at 23, the cemetry at Kastri.