Monte Kali and Kalimanjaro are local colloquial names for the spoil heap or spoil tip that towers over the town of Heringen, Hesse, Germany.

It is one of a number of sites where the K+S chemical company dumps sodium chloride (common table salt), a byproduct of potash mining and processing, a major industry in the area.

The names are puns of Kali (shorthand for Kalisalz, German for "potash") on "Monte Carlo" and "Kilimanjaro."

[1] According to the Werra Potash Mining Museum in Heringen, Monte Kali has been in operation since 1976; as of August 2016, it covered 98 hectares (240 acres) and contained approximately 201 million tonnes of salt, with another 900 tonnes being added every hour and 7.2 million tonnes a year.

The legal limit is at 2,500 mg/L chloride, which is saltier than parts of the Baltic Sea.