From the Article
"...Surveys conducted along the southeastern coast of Las Bela in the following years have shown that shell middens with different characteristics and variable chronology exist in many places among which are Gadani and Phuari Headlands and the shores of Lake Siranda. Shell middens are places where the debris from eating shellfish and other food has accumulated over time. They can contain shellfish remains; bones of fish, birds, and land and sea mammals used for food; charcoal from campfires; and tools made from stone, shell, and bone. Shell middens tell us a lot about Aboriginal activities in the past. The types of shells in a midden can show the type of marine environment that was used and the time of year when Aboriginal people used it."