https://www.warrelics.eu/forum/attachments/russia-soviet-union-armour-artillery-vehicles/1474702d1610622515t-russian-tank-armoured-cover-cap-cover-cap-may-fitted-outside-tank-under-exterior-cover-cap-even-engine-etc-inside-cap-1.jpg?s=da071b65c6f6726a22b4f5f2537c183c