Palynological and lithological investigations of Lake Arin indicate mid-late Holocene lake level fluctuations both in Lake Arin and Lake Van. Pollen diagram and lithological features of sediments suggest unstable conditions during last 6 kyr BP for Lake Arin. Climatic changes and human impact have been both effective for destroying uppermost sediments of the lake. Semi-arid steppe vegetation dominance has been identified for Early Holocene around Lake Arin. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.