To know the soil properties, in so doing be in position to determine whether the particular site is suitable for the purpose intended To know the history of the site To know what remedies need to be...
A moulage can be used to make of mold of shoe or tire impressions and then be used for comparison of suspect's shoes or vehicle when investigating a crime.
Stonehenge is important because no one knows why it was built or who built it. Also the stones used to build it were an enormous size for the technology around that time. How they lifted those stones...