Several carbon-dated sites in Estonia indicate that human habitation of the shores of the Baltic Ice Lake began in the Boreal period, in the time window 11,200-10,200 BP. Charcoal, animal bones, and artefacts from Mesolithic temporary settlements have been found at Pulli and in the Lake Ladoga region. The diet included roe deer, red deer, marten, otter, wolf, bear and ringed seal. An open pine-birch forest covered the region. Pollen from Pinus, Betula, Alnus, Rosaceae, Cyperaceae and Artemisia have been found.