This is the 13705th most frequent Polish word.
podkrakowskiej
"Podkrakowskiej" refers to something located near or surrounding Kraków (a city in Poland).
In this sentence, 'podkrakowskiej' is used as an adjective to describe the geographical proximity of the village to Kraków, indicating that it is situated near (under) Kraków.
Mieszkam w małej wiosce podkrakowskiej.
I live in a small village near Kraków.
Here, 'podkrakowską' modifies 'dolinę' (valley) to specify its location as being near Kraków.
Odwiedziłem podkrakowską dolinę Szklarki.
I visited the Szklarka Valley near Kraków.
In this context, 'podkrakowskich' is used to describe legends associated with the area surrounding Kraków.