Concentric craters

[Gypsummoon]

I am new to the mapping and having difficulty indicating two different craters if they are concentric and the centers are the same. It keeps deleting the first one. Suggestions?

[grapes]

Do you have an example?

[Gypsummoon]

Not sure what you mean by example? The photos of areas needing mapping are not marked by any identification number, which would be helpful for referencing. I will do one today and if I run into the same problem I will send a message. I'm assuming that our data is being tracked by dates as well. I have done about 6 photos so far and have not received any feedback yet. When should I expect this? It would be very helpful so I don't keep making the same mistakes.

[mrprez]

you have to start the circle somewhere else and then move it to the desired location.
hope it works

[publiusr]

That might be an interesting art project of the far future. Have a big space rock hit a plain, put a smaller one in that, and so on to get multiple rings...