Researchers often obscure the location of sites on purpose so that tourists and vandals don't show up and damage them. They'll share better photos and maps in p

Researchers often obscure the location of sites on purpose so that tourists and vandals don't show up and damage them. They'll share better photos and maps in person, but not anywhere that the public can see. This probably applies more to something like the archaeological and geological digs at Lake Mungo than a 520km-wide buried crater, but there can be a "better safe than sorry" attitude in the field.