My fatehr Moshe and I traveled to Tzibulevka, Ukraine June, 2019. There are at least 3 momuments/memorials placed on 3 mass graves. Their coordinates are as follows: 48.383201,29.063554 , 48.377815,29.123555 , 48.394636,29.054917 .
Looking at sattelite images through Google maps you will notice a small patch of trees in the middle of vast fields near the coordinates above. The monuments are between those trees. for more details regarding the sites please contact me – Joel Fox – foxisus@gmail.com .