Warlimpirrnga Tjapaltjarri (circa 1958, Australia) and his family—including younger sister Yukultji Napangati, lived a semi nomadic life as hunter-gatherers in the Gibson and Great Sandy Desert regions with little or to no outside contact until 1984. His paintings, which have become significant international exponents of contemporary painting from Australia--depict undulating landscapes appearing to oscillate and buzz with visual energy. The artist generates this effect by painting patterned backgrounds on which he meticulously adds tight, meandering lines composed of thousands of dots. These lines and switchbacks correspond to mythical stories of the Pintupi people and the formation of the desert in which they live, operating more as mnemonic devices than representations of narrative or visual memory.