Restored, the original plate was stolen, this is just a print.

"According to legend, one of the Swedish detachments lost its way in the spring of 1641 and drowned in a bog, together with the horses . The event is commemorated by a monument by the road from the railway station to Háje and České Hamrů ."

cs.wikipedia.org/wiki/Kov%C3%A1%C5%99sk%C3%A1