unknown mountains on postage stamps
Argentina 1959, Skier
existing on imported chalky, national unsurfaced, and national glazed papers.
The stamp was issued in the series "Pioneers of Antarctica".
Expedition conducted by AL FILO in the Andes, where a computer program (formed by Laureano Married, Jesus Gonzalez and Bob Green Joswick) crossed this ridge on globe (free flight) in 1990.
The stamp and labels were issued in the seies "Al filo de lo imposible I".