Skidder TDT-55A http://ru.wikipedia.org/wiki/ТДТ-55_(трактор)

Skidder TDT-55A on tracks from JSC OTZ, 95 HP, now Machinery & Industrial Group N.V. http://www.tplants.com/en/production/photo/47/ and http://www.r-les.ru/spravochnaja-informacija/kharakteristiki-tdt_55a.html