Quoting from an email from BillionGraves.com:
Cemeteries around the world are gaining popularity as tourist attractions and destination points. In recognition of this, many cemeteries are planning visitor events and turning their grounds into park-like settings.Come take a virtual tour of the seven largest cemeteries through BillionGraves’ latest blog post by clicking HERE.If you would like to take gravestone photos, CLICK HERE to get started. You are welcome to do this at your own convenience, no permission from us is needed. If you still have questions or concerns after you have clicked on the link to get started, you can email us at Volunteer@BillionGraves.com.
You may have a cemetery or two near you that needs to be documented by GPS based photos. I happen to live in Utah and according to BillionGraves.com every cemetery in Utah has been photographed, although there might be some old, abandoned ones that have been missed. I know there are lots of places where the cemeteries have yet to be photographed. This is a good pandemic activity. You are not likely to have anyone nearby and have to worry about self-distancing.