This activity is banned in almost all of the immense lagoon because clams have been contaminated by local industrial plants.
These include aerobic lagoons, activated sludge processes and trickling filters.
The lagoon hydrological system is mainly influenced by the changes between the rainy and dry seasons and by the freshwater supply of several rivers.
The location was spectacular, with the performers on top of, or half-way up, a cliff which drops to a lagoon.
Facies 7 is a skeletal and peloidal facies formed in semi-restricted environments, in a sheltered lagoon located near the shoreline (a protected back-shoal environment).
At times, these shells appear suspended in a micritic matrix, a fact attributable to a low-energy environment, possibly a lagoon.
The lagoon, immediately to its north, is a rich source of fish, shellfish, turtles, alligators, wild plant foods, and other lacustrine resources.
Flooding would then allow planting in the elevated areas along the seasonal lagoon's edge and on top of the broad dams.
