Clark uncovered an amazing array of finds. On the lake shore of the palaeolake was a platform that appeared to have been made by people, presumably to stabilise the edge of what would have been a muddy area. On top and within this platform the diggers found a range of faunal remains: red deer, roe deer, wild boar, elk, auroch (wild cow), birds, beaver, pine marten, hedgehog, hare and badger. Finds of wolf were also made, later thought to be domesticated dog.
There were a lot of flint artefacts and waste but what was particularly interesting was the high number of axes/adzes found, presumed to be used in wood working. These are quite rare in this landscape and not really found on more recently discovered Early Mesolithic sites around the lake.
There was considerable evidence for antler and bone working into tools and particularly barbed points (perhaps used as spears for killing animals, fish etc). What is incredible about these is that 193 have been found on the site, which accounts for roughly 97% ever found in the UK! So, a concentration like this is very important.
Another set of amazing finds were the stag head-dresses. These are made out of the skulls and antlers of red deer, smoothed out inside and pierced, presumably for wearing on the head. 21 of these were found, and apart from a few in Europe no other discoveries of these have been made! Again they are very rare. There are various interpretations as to how they were used, including perhaps worn during stag hunts, or perhaps in "ritual" ceremonies, as is known in the ethnographic record.
Some of the head-dresses are housed in the British Museum and you can see a detailed picture of one of them by clicking here.
There were also mattocks made of elk antler for digging in the ground; various tools such as "bodkins" perhaps for piercing leather and also beads made of shale and amber- again all incredibly rare and important finds.
Information from Clark (1954) Star Carr. Cambridge: Cambridge University Press