Sources: E.B. Worthington, Man from the farthest past, 1938. Publisher: Smithsonian Scientific Series
Caption of the photo: Reconstruction of group of Swiss lake dwellings built over the water on piles. After Schmidt.
The following paragraph is cited from the above source: Real architecture first appeared during the Neolithic phase of man development. Men then learned to build not mere windbreaks or even huts, but groups of substantial timber houses with walls of bark or wattle-work daubed with clay. For defense, they build their villages over the water or surrounded them with strong stockades made of logs set on end, side by side, in the earth.