"This is a linyji (claypan). We find kalaru (seed used for making damper from samphire bush) there that we collect. Too much good tucker!"
- Mayiwalku May Chapman

Jarnn is a large claypan at the Southern end of Nyayartakujarra (Lake Dora), a large salt lake surrounded by tali (sand hills) within the Karlamilyi (Rudall River) region. This area forms part of Mayiwalku’s ngurra (home Country, camp), the region which she traversed extensively as a young girl. Mayiwalku’s sister Nyanjilpayi was born at Jarnn. During the pujiman (tradional, desert dwelling) era, Jarnn was primarily used as a camping site in the wantajarra (wet season), when the claypan filled with kapi (water). Other nearby water sources include Tarl, Kartuny, Wawul, Warnkarr, Jutupa, and Kunalimpi.

Jarnn is known as a site where kalaru grows in abundance. In the pujiman era, the black kalaru seeds were seasonally harvested from this area. Once collected a labour intensive process began to produce damper, a type of flat bread. The kalaru seeds were first washed several times before being ground with a jiwa (stones used by women for grinding seeds) to make a type of flour, which was then mixed with water to create a dough that was finally cooked in the ashes of a fire.