Cueva de las Manos

Cueva de las Manos (Spanish for Cave of the Hands) is a cave located in the province of Santa Cruz, Argentina, 163 km (101 mi) south from the town of Perito Moreno, within the borders of the Francisco P. Moreno National Park, which includes many sites of archaeological and paleontogical importance.

The Cave lies in the valley of the Pinturas River, in an isolated spot in the Patagonian landscape, some 100 km (62 mi) from the main road, National Route 40. It is famous (and gets its name) for the paintings of hands, made by the indigenous inhabitants (possibly forefathers of the Tehuelches) some 9,000 years ago. The composition of the inks is mineral, so the age of the paintings was calculated from the remains of bone-made pipes used for spraying the paint on the wall blocked by the hand.

The main cave measures 24 m (79 ft) in depth, with an entrance 15 m (49 ft) wide, and it is initially 10 m (33 ft) high. The ground inside the cave has an upward slope; inside the cave the height is reduced to no more than 2 m (7 ft).

The images of hands are often negative (stencilled). Besides these there are also depictions of human beings, Guanacos, rheas, felines and other animals, as well as geometric shapes, zigzag patterns, representations of the sun, and hunting scenes. Similar paintings, though in smaller numbers, can be found in nearby caves. There are also red dots on the ceilings, probably made by submerging their hunting boleadoras in ink, and then throwing them up. The colours of the paintings vary from red (made from hematite) to white, black or yellow. The negative hand impressions are calculated to be dated around 550 BC, the positive impressions from 180 BC, and the hunting drawings to be older than 9,000 years.

Canyon at the Pinturas River, view from the caves

Most of the hands are left hands, which suggests that painters held the spraying pipe with their dexterous hand. The size of the hands resembles that of a 13-year-old boy, but considering they were probably smaller in size, it is speculated that they could be a few years older, and marked their advancement into manhood by stamping their hands on the walls of this sacred cave.

Cueva de las Manos has been listed as a World Heritage Site since 1999.

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Perito Moreno Glacier

The Perito Moreno Glacier is a glacier located in the Los Glaciares National Park in the south west of Santa Cruz province, Argentina. It is one of the most important tourist attractions in the Argentine Patagonia.

The 250 km² ice formation, of 30 km in length, is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system shared with Chile. This icefield is the world's third largest reserve of fresh water.

The Perito Moreno Glacier is one of only three Patagonian glaciers that are not retreating. Periodically the glacier advances over the L-shaped "Lago Argentino" ("Argentine Lake") forming a natural dam which separates the two halves of the lake when it reaches the opposite shore. With no escape route, the water-level on the Brazo Rico side of the lake can rise by up to 30 meters above the level of the main lake. The enormous pressure produced by this mass of waters finally breaks the ice barrier holding it back, in a spectacular rupture event. This dam/rupture cycle is not regular and it naturally recurs at any frequency between once a year to less than once a decade.

The terminus of the Perito Moreno Glacier is 5 km wide, with an average height of 60 meters above the surface of the water, with a total ice depth of 170 meters. It advances at a speed of up to 2 m per day (around 700 m per year), although it loses mass at approximately the same rate, meaning that aside from small variations, its terminus has not advanced or receded in the past 90 years. At its deepest part, the glacier has a depth of approximately 700 m.

The glacier first ruptured in 1917, taking with it an ancient forest of arrayán (Luma apiculata) trees. The last rupture occurred in March 2006, and previously in 2004, 1988, 1984, 1980, 1977, 1975, 1972, 1970, 1966, 1963, 1960, 1956, 1953, 1952, 1947, 1940, 1934 and 1917. It ruptures, on average, about every four to five years.

The Perito Moreno glacier, located 78 km from El Calafate, was named after the explorer Francisco Moreno, a pioneer who studied the region in the 19th century and played a major role in defending the territory of Argentina in the conflict surrounding the international border dispute with Chile.

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