In a few sentences can you give some information about Stonehenge and the cave paintings that were found in Spain by the two boys. Which is a greater achievement of these time periods?
Great Stonehenge site:
http://witcombe.sbc.edu/earthmysteries/EMStonehenge.html
There have been a number of cave painting sites in Spain. This is a very good article on one of these.
http://en.wikipedia.org/wiki/Cueva_de_La_Pasiega
NOW... it is up to you to decide which of the fabulous examples of pre-historic art is the most valuable in terms of what it teaches about the people of its time.