100-Mile-Long Wall in Africa [Sungbo's Eredo]

Science Frontiers ^ | March/April 2000 | William R. Corliss

[LadyDoc]

there is a BBC program on this linkand another one on Offa's dyke in the series "search for the Dark Ages".

Alas, Glastonbury is not manmade, although there are huge hills there.

ALSO google to find the program "Standing with stone".

[gleeaikin]

The jungles of Yucatan are also known for long elevated causeways. Then there is the Great Wall of China. These all provide similar advantages.
1) Impressive to the common man and invaders.
2) Good to move fast along the top to reinforce areas with problems or attacks.
3) Good view over hills and jungles, while traveling and from spaced towers and barracks.
4) Above flooding and snow drifts.
5) Unambiguous boundry lines.

[blam]

"The jungles of Yucatan are also known for long elevated causeways."

I've walked on a number of those with massive trees growing directly in the road-way...they're old.

[colorado tanker]

We know quite a lot about political organization in the savannah kingdoms, but this indicates consolidation was happening in the rainforest earlier than I thought.

Good thing this is in Southern Nigeria. Muslims would probably want to try to blow it up.

[SunkenCiv]

:’)

[lepton]

Needs some editing... ;)

[1010RD]

The expressways in Chicago were supposed to fulfill the same purpose.

[1010RD]

These areas have been under some continuous attention for centuries. Think about the areas of the globe currently sitting in jungles waiting to be discovered: Central and South America, Africa and Asia.

[SunkenCiv]