Interesting subject. Someone kitted this in 1/43 a few years ago and I recall it was big. This one must be huge! The rock salted surface you posed it on kinda looks like a salt flat too.
I was curious about the Australian flag on the nose and that name Eyres so I googled it. Turns out the same Englishman that discovered the rock also found an enormous dry lake bed in Southern Australia around 1840. Thanks for sharing.