How did people know where the dead bodies were to exhume and move them from one mass grave to another during the Ukrainian Holodomor?

In Wikipedia's article on the topic, it mentions that local authorities dug up bodies from the shallow graves, tossed them into horse-drawn carts, and dumped them into mass graves in hidden locations. The idea being that the fact the first round of mass graves were in public spaces like parks helped people realized people were dropping dead and spreading news of the dead to fellow Ukrainians.<br><br>How was the people tasked with moving the bodies know where to find the bodies? How were they guaranteed to find the exact spot where the dead were buried when they were buried in parks and over grown lands?