Krudum, Communication and observation tower in Horní Slavkov, Czechia.

Krudum is an observation and communication tower made of steel, located on Mount Krudum near Horní Slavkov in Czechia. It stands about 50 meters tall, with a viewing platform roughly 30 meters up, reached by climbing an interior staircase of 152 steps.

A wooden lookout stood on the summit by 1894, and on 11 September 1932 a 10-metre stone tower with battlements was opened as the Dr.-Kempf-Warte, named after physician Andreas Kempf, who died in 1929. It decayed after the war and its masonry was levelled in 1981. The present 50-metre mast, with a platform 30 metres up, opened on 15 October 2008.

The tower's name recalls Andreas Kempf, a physician from Třídomí who initiated the 1931 stone lookout; it was inaugurated on 11 September 1932 as the Dr.-Kempf-Warte, after his death. The summit also holds the Franzosenstein, a survey point set in 1808 under Emperor Franz II, inscribed Reg Imp Fr pmo 1808.

The tower can be reached by foot along marked hiking trails, including a yellow-marked route from Hrušková and a green-marked one from the former settlement of Milíře. Both paths go uphill, so sturdy footwear is a good idea.

The tower sits at about 835 meters above sea level and serves both as an active telecom mast and a freely accessible viewpoint at the same time. Most structures of this kind are off-limits to the public, so the open access here is something of an exception.