I suppose that KAL could be somewhere in Slovenia
Kal, SloveniaGoogle translates the Slovenian word "Kal" as clay or a pond. Either of the two meanings makes sense to me since:
1. In Old Polish the word "kał" stands for mud, sludge, silt
2. The Slovenian adjectives attached to some of those "Kal" villages make sense in connection with the "pond" meaning. They are "Rdeèi", "Črni", "Veliki", "Mali" so the village names translate as: Red Pond, Black Pond, Great Pond, Small Pond.
I found 14 "ponds" in Slovenia by searching "Kal Slovenia" in Wikipedia:
Kal is a village in the Semiè municipality in Slovenia . The area is part of the historical region of Lower Carniola
Kal is a settlement in the Hrastnik municipality in central Slovenia .
Kal is a village to the west of Pivka in the Inner Carniola region of Slovenia
Kal pri Krmelju is a small settlement in the Sevnica municipality in central Slovenia .
Kal is a small village just west of Ambrus in the Ivanèna Gorica municipality in central Slovenia .
Kal is the name of a small village in the mountains to the north of the Baèa valley in the Tolmin Municipality in the Littoral region of Slovenia.[2] It no longer has any permanent residents.
Kuzarjev Kal is a settlement in the hills to the northwest of Novo Mesto municipality in southeastern Slovenia .
Rdeèi Kal is a settlement in the hills to the southeast of Dobrniè in the Trebnje municipality in eastern Slovenia .
Rdeèi Kal is a small village to the south of Dob pri Šentvidu in the Ivanèna Gorica municipality in central Slovenia .
Luèarjev Kal is a settlement in the hills to the east of Muljava in the Ivanèna Gorica municipality in central Slovenia .
Črni Kal (San Sergio) is a village in southwestern Slovenia in the Municipality of Kope
Veliki Kal is a settlement in the hills to the south of Šentvid pri Stièni in the Ivanèna Gorica municipality in central Slovenia .
Veliki Kal is a settlement in the Mirna Peè municipality in southeastern Slovenia .
Mali Kal is a small settlement in the hills to the north of Šentvid pri Stièni in the Ivanèna Gorica municipality in central Slovenia .
1. In Old Polish the word "kał" stands for mud, sludge, silt
Actually, I found better explanation in Wikipedia, in connection with the name Kalisz.
The modern Kalisz was most probably founded in 9th century as a provincial capital castellany and a minor fort. The name itself stems from the Celtic term cal which means stream, or Slavic term kal, meaning swamp or marsh.