Stamp: Kondoa Caves (Tanzania 1991)
Kondoa Caves (Tanzania 1991)
28 March (Tanzania ) within release Craters and Caves goes into circulation Stamp Kondoa Caves face value 5 Tanzanian shilling
| Stamp Kondoa Caves in catalogues | |
|---|---|
| Michel: | Mi:TZ 840 |
Stamp is square format.
Also in the issue Craters and Caves:
- Stamp - Ngorongoro Crater face value 3;
- Stamp - Kondoa Caves face value 5;
- Stamp - Mount Kilimanjaro´s inner crater face value 9;
- Stamp - Olduvai Gorge face value 12;
- Stamp - Open area of cave face value 10;
- Stamp - Woman seated beside welcome sign face value 10;
- Stamp - People viewing cave, large stalactite face value 10;
- Stamp - Man climbing up to view cave face value 10;
- Souvenir Sheet - Historical Craters and caves - Amboni Caves face value 40;
Stamp Kondoa Caves it reflects the thematic directions:
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word cave can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called exogene caves. Caves which extend further underground than the opening is wide are called endogene caves
In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.
