Sometimes I click on the Bouldery button, but nothing happens. I see from the internet that the altitude of the polar lunar orbiter varies from 50 km to 216 km, so I assume that if the image is at a great altitude there is no point in enabling the Bouldery button because boulders would be invisible.
Is there a way to know where the image is on the Moon and how high it is?
I sometimes see objects which seem to be depressions because the pattern of light and shade is the same as for craters, but they do not look circular. Are these objects worn craters?