Originally posted by Tuning Spork
Their are very few recognizable craters on Earth because the weather quickly ("quickly" in geological terms, anyway) gets rid of them. The crater
in Arizona exists because it was created relatively recently and in a desert.
Yes only a few... just a couple hundred easily recognized ones
EDIT TO ADD..
Oops sorry Sporkey I just realized I answered this one
Here is the list for Australia
Wolfe Creek
This one look a lot like Victoria Crater on Mars...
Now NASA says the walls we see are the best example of cross bedding showing ancient dunes compressed.. so while there were oceans in some areas of
Mars, there were most likely desserts as well something like Earth
And thousands of years of heavy atmosphere with little rainfall has not wiped out the Egyptian monuments... nor has heavy rainfall and jungle growth
wiped out the Mayan statues...
How long ago was this civilization on Mars? Well since we haven't found it yet we cannot carbon date it

10-12 thousand years? We just found one
under the dirt in Turkey remarkably preserved from that time frame... with amazing carvings that predate pottery (hehehe gonna mess up some archeology
fanatics

)
[edit on 11-6-2008 by zorgon]