Earthquakes worldwide: heavy earthquakes (magnitude 5.0+) Friday January 8th, 2021 / Raimund Schnürer / No Comments
Hydro power plants: water volume required and pump efficiency Friday January 8th, 2021 / Raimund Schnürer / No Comments
Locations and visual connections of watch towers Tuesday February 4th, 2020 / Raimund Schnürer / No Comments
Number of sleeping places in mountain huts Tuesday February 4th, 2020 / Raimund Schnürer / No Comments
