Prehistory, in Great Britain, is usually taken to denote the whole story of human activity in our country before its invasion, or before the invasion of any given part of it, by the Romans in the 1st century A.D.; it may also denote the totality of research upon, and interpretation of that story. The adjective Prehistoric was first popularized in the 19th century by Sir John Lubbock, the first Lord Avebury, and it and its cognate substantive Prehistory have been found so convenient, that we take their use for granted. Yet to a strictly logical mind they are tiresome and problematic words. Since what is Prehistoric must precede in time what is Historic, Prehistory should precede History; and History, to Lubbock, was evidently History in its restricted sense of the story of human activity known to us from written documents. But History can mean more than that: even the original Ancient Greek word historía did not mean history only in Lubbock's sense—the word for that was syngraphé—but rather, anything found out by enquiry. Thus to-day in the 20th century, when the range covered by documentary history has been enormously extended, both in time and space, by archaeology and anthropology in all their branches, we can speak also, as Elliot Smith did in his book of twenty years ago, of Human History as covering all the human story—all of What Happened in History, as Professor Childe's book called it in 1942—without restriction. In other words, History in the broad sense includes Prehistory, which must yet precede History in the narrow sense. We, as prehistorians, are of course quite used to this; and we seldom notice the patient smile on the face of the logician.

The settlements in Western Britain and Ireland which are earliest known to us from the chamber tombs have been ascribed to movements up Atlantic trade routes from the Mediterranean before the middle of the 2nd millennium. Such movements at so early a date must be conceded to be surprising; but the broad case for believing in them is a cogent one, and earlier suggestions that the chamber tomb cult implied only missionary settlers, or even that the cult was transmitted without movement of population at all, have rightly been discarded. None the less it is far from easy to visualise precisely the processes of settlement and trade, and the thesis has hardly yet been critically tested. It is the purpose of this paper to attempt as precise an account as can be given of the settlements established in Scotland in the 2nd millennium, and of the trade which these settlements developed. As a preliminary, attention will be called to certain conditions of primitive trade, settlement and transport as a help in judging the conditions likely to have applied in Northwest Europe in the 2nd millennium. Since the level of culture to be inferred for the early settlements is one of the questions which this paper must discuss, these considerations can be no more than suggestive, yet they should at least help to free us from presumptions which we might otherwise too readily import from the conditions of trade, settlement and transport with which we are immediately familiar.

Gorham's Cave is one of a group of seven which lie at the base of the cliffs on the east side of Gibraltar, below Europa Advance Road, which is about two hundred feet above them. There is now a beach in front of the five southern caves but this has only been in existence for a few years, and arose from the depositing of tunnel spoil over the cliff edge. Four of the caves are named, starting from the south end of the beach, Bennett's, Gorham's, Vanguard and Boathoist; the remaining three have local names which change from time to time. The beach, which is now called Anderson Beach, will probably disappear in a few years and the sea will again reach the base of the cliffs.

The cave is named after Major A. Gorham who explored a fissure at the back of the main cave in 1907, and for convenience both have been called by his name. The finding of an archaeological deposit was due originally to two members of R.E.M.E., when temporary access had been made to the beach from the cliffs above, and excavations were carried out in the upper level by Captain G. B. Alexander, R.E., and Lieut. Monke, R.E.

In 1948 the Governor of Gibraltar asked that full scale excavations should be carried out and two seasons' work have now been devoted to the cave under his patronage and with the help of funds supplied by the Percy Sladen Memorial Fund.