50 years of research and training station Gobabeb - stamp block mint never hinged, catalog no. 1423

On the occasion of the "50th anniversary of the research and training station Gobabeb", the postal administration in Namibia issued this stamp box. The stamp block contains three stamps. A desert chameleon is depicted on the stamp with the value "Standard Mail". Compared to most other chameleons, this one is not in subtropical areas, but in the desert. The dune grass is depicted on the $ 5.10 postage stamp. The dune grass roots only one to 20 cm deep, but tapering to 20 m. The $ 5.80 stamp is illustrated with Lepidochora discoidalis. The "flying saucer" digs side trenches, with this unusual method he supplies himself with water. Catalog no. 1423-1425 p. 81