I thought this news story might be of interest to this project
https://www.thejc.com/news/world/help-us-mark-shoah-sites-urge-uk-c...
Michael Lazarus, an 82-year-old retired businessman from Hertfordshire, has been travelling to Belarus with his wife, Diana, every year for the past 14 years, to erect headstones to mark the mass graves of those who perished in the Holocaust.
In 2003, the couple founded the Simon Mark Lazarus Foundation, which was then joined by Americans Miles and Marilyn Kettler and Warren and Beverly Geisler to form the Committee for the Preservation of Holocaust Victims’ Memory.
The committee identifies the locations of mass graves and co-ordinates the construction of the memorials, each standing at almost six feet tall and inscribed in English, Belarusian and Hebrew.