"5 cross-country skier are starting the long way in the morning at Krippenstein (2100 mt, 6890 ft) to the Hoher Dachstein (3000 mt, 9843 ft, banded pyramide left side). They have to cross the karstic plateau which is in winter dangerous due to snowcovered"
Price: 10
This global electromagnetic resonance phenomenon is named after physicist Winfried Otto Schumann who predicted it mathematically in 1952. Schumann resonances occur because the space between the surface of the Earth and the conductive ionosphere acts as a
Price: 10