This German helmet M35 with remnants of white camouflage was found near city Stalingrad (now Volgograd). The specific place where the helmet was found is near the runway of the Pitomnik airfield. Read more about this place in this article - Pitomnik Airfield - the last hope of the 6th Army. Helmet size - 64
Below the map shows the specific place where the helmet was found, the map shows that there are a lot of dugouts around. These are two-level and three-level dugouts.