For a high-desert road trip in northern Argentina, pack layered clothing to handle strong daytime sunlight and cold temperatures after dark. Essential sun protection includes a wide-brimmed hat, sunglasses, and high-SPF sunscreen, particularly at high elevations where UV exposure can be intense. Because remote areas may have limited services, carry offline navigation tools, a warm jacket, and a basic first-aid kit. Adequate water and other essential supplies are also important when traveling long distances through the Puna.