Click on the picture to access the interactive application.
Some people on dialup may have trouble downloading this file as it is quite large. The author would be pleased to provide a copy on DVD instead.
If you would like a DVD copy, please email Ali Harley, providing your postal address.
Find out more about 'On To Mars'
About the author
Ali is an e-learning specialist and an avid geologist every time she has the chance.
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