Krakus Mound is said to be the burial place of Krakus, the founder of Krakow, although no actual evidence of human remains have been found during archaeological digs. The current best guess appears to be that this was part of an ancient grave complex, although much has been destroyed, and it dates to the eighth to tenth centuries.
There are extensive views over the city from the top of the mound. I say top, but I didn’t actually walk to the top of it, just to the base.
The area has numerous trees, and is located next to Liban Quarry, but apparently there was once an oak tree which grew on top of the mound.