The Provincial Ischigualasto Natural Park (603.7 km²) is located in the northeast of the province of San Juan. It is also called as “Moon Valley” from the impressive rock formation weathered through millions of years. The UNESCO World Heritage Convention declared the park as a World Heritage Site in 2000.
Famous attractions are "The Worm", "Painted Valley", “The Sphinx”, “The Bowling Field”, “The Submarine”, “The Mushroom” and the “Red Ravines”.
Argentina 1976, El Hongo (the Mushroom).
(existing on watermarked and unwatermarked paper)
El Hongo is an eroded rock formation and towers more than 20 meters high and it overhangs at all sides.
Argentina 1977, El Hongo (the Mushroom).
(existing on normal watermarked and unwatermarked paper & on phosphorescent unwatermarked paper)
Argentina 2003, The Submarine rock formation.
The stamp was issued in the series "Landscapes II".
Argentina 2013, Cancha de Bochas (The Bowling Field).
Amazing balls of stone (50-70 cm in diameter) that mysteriously continue rising through the ground.
Guyana 2015, Sphinx rock formation.
The stamp was issued in the series "World Heritages Sites of the Americas".
The illustration of the miniaturesheet depicts the Submarine rock formation in the Ischigualasto Natural Park as well.