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1956 |
U.S.A. FDC 24 - 09 -1956 Monadnock Devils Tower Laccolith |
|
1971 |
RHODESIA FDC 30 - 08 -1971 Granite |
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1976 |
BELGIQUE FDC 16 - 10 -1976 St. Jerome in Mountain Landscape Peinting |
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1978 |
Sud Africa FDC 13 - 11 -1978 Golden Gate Drakensburg |
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1979 |
AUSTRALIA FDC 09 - 04 - 1979 Rock formations National Park |
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1980 |
ISLE OF MAN FDC 05 - 03 - 1980 Rock formations Conglomerate arch Volcanic rocks Sugar- loaf rock Limestone breccia |
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1981 |
ENGLAND Great Britain FDC 24 - 06 -1981 Basaltic lava flow The Giant's Causeway y |
