Together with my Russian colleagues Alexander V. Kirdyanov (V.N. Sukachev Institute of Forest, Akademgorodok and Siberian Federal University, Krasnoyarsk) and Anatoly N. Nikolaev (North-Eastern Federal University and Melnikov Permafrost Institute, Yakutsk), as well as my PhD student Freddy Reinig (WSL), I organized our third expedition to north-eastern Siberia. Between July 15 and 31, we will sample subfossil wood along the Indigirka River. In so doing, we mainly aim at supplementing our material from 2013 (Büntgen et al. 2014, The Holocene). Moreover, we will focus on the collection of permafrost macrofossils for the extraction and analyses of aDNA.