There are 3 pyramids in Poltava region built in the end of 19 century as burial-vaulds by Russian aristocrats who somehow was connected with Egypt campaigns.

http://kremenchug1.narod.ru/history_piramidy.htm - in Russian. For unknown reason google translate or other online translators was not able to translate that page, IDK, try to use translator addon in browser or https://translate.yandex.ru/translate - it do the job, but a permanent link to translated page does not work, so can't post it here.