Experience the ingenuity of primitive engineering as a master builder crafts a stunning circular underground pool using only ...

Experience the incredible journey of building a two-story hut and swimming pool by hand, deep in the wilderness. Watch as two men use primitive technology and traditional skills to gather natural ...

Some early whales may have swum using their arms as well as their legs, a bit like a dog paddling in water. Despite this primitive swimming style, they seem to have managed to spread long distances ...