The picture that Crighton posted was Laguna Salinas. This is what I found on a site about flamingos:
"In southern Peru, Laguna de Salinas hosts several colonies of Andean, James and Chilean flamingos. But even though the lake has been part of a
nature reserve for more than 20 years, the level of protection leaves much to be desired. A foreign company uses heavy machinery to drain the lake and
mine borates, fragmenting the habitat with roads. Local people obtain salt by creating drying plots, reducing the lake's coverage; collect eggs from
inflated inner tubes; and use flamingos for target practice during the hunting season. Refuse from nearby hamlets washes into the lake during the
rainy season."
Like someone already said in this thread, the structures are the result of salt mining.
This is the site:
www.nwf.org...
It's the 7th paragraph from the bottom of the page.
[edit on 29-10-2007 by enigmania]
[edit on 29-10-2007 by enigmania]