Archaeological evidence implies that the enclosures were visited occasionally by Neolithic groups rather than being permanently occupied. The presence of human remains in the banks and ditches of the enclosures has been seen as an attempt by the builders to connect their ancestors with the land and thus begin to anchor themselves to specific areas. Longitudinal sections excavated along the ditches by archaeologists suggest that the builders repeatedly redug the ditches and each time deliberately deposited pottery and human and animal bones, apparently as a regular ritual. Environmental archaeology suggests that the European landscape was in general heavily forested when the enclosures were built and that they were rare clearings in the woodland that were used for various social and economic activities.