As well as reaching the bluestone sockets, the archaeologists have also unearthed a whole host of other finds as theyhave peeled back the layers of the 2.5m-by-3.5m (8.2ft-by-11.5ft) trench.
An ectopia is a collection of several hundred nerve cells that have pushed their way up from the lower cortical layers into the outermost one, where they are not found in normal circumstances.