1.   Also, the human rights group is concerned about reports that some may have died by falling into a bauxite mud lake in the area where they were left.

2.   The human rights group also expressed concern about reports that some may have died by falling into a bauxite mud lake in the area where they were left.

3.   They were unloaded in a deserted area, called Dump Land, near a bauxite mud lake.

4.   They were abandoned in a deserted area called Dump Land, near a bauxite mud lake.