Cueva de las Manos probably made by submerging their hunting bolas in ink, and then throwing them up. The binder is unknown but the mineral pigments include iron oxides, producing reds and purples; kaolin, producing white; natrojarosite, producing yellow; and manganese oxide, which makes black. Carlos J. Gradin has studied the cave. Cueva de las Manos has been listed as a World Heritage Site since 1999. Cueva de las Manos Cueva de las Manos (Spanish for Cave of Hands) is a cave or a series of caves located in the province of Santa Cruz, Argentina, south of the town of Perito Moreno. It is
Guns in the Hands of Artists Guns in the Hands of Artists Guns in the Hands of Artists is an art exhibit and project conceived by Brian Borrello in the mid 1990s, which was later converted to a book. The "Guns in the Hands of Artists" project was conceived by artist Brian Borrello in the mid 1990s, and started in 1996; the exhibit saw artists convert decommissioned guns into artworks as an expression of gun violence in the United States. Borrello acquired decommissioned guns obtained through a trade-in program, then gave them to New Orleans-based artists, who converted them into artworks in a variety of media,