An ancient Scots religious site predating the Pyramids and Stonehenge may have been abandoned because of climate change, according to archaeologists. Kilmartin Glen, in Argyll, has one of the most important concentrations of Neolithic and Bronze Age remains in Europe. The glen -- a place of sacred rites from 3700BC or earlier -- contains at least 350 ancient monuments, including burial cairns, rock carvings and standing stones. The most spectacular of the remains is the fortress of the Scots at Dunadd, capital of the kingdom of Dalriada. But archaeologists have identified a period of almost 1,000 years in which no...