Janko Kala is located on a prominent hill in the community of Zapana. It is cut by the modern road as it crests the hill to the west of the schoolhouse and community hall. Like most major Formative Period sites, it is visible from a distance as an area of darkly-stained soil, standing out against the natural red. The name means 'white stone,' after an upright block of limestone located slightly offsite on a ridge to the Southwest. This block is certainly imported and worked, and its presence would seem to indicate some form of corporate construction at the site. However, the site has been remodeled extensively by recent agricultural activities, and it is impossible to identify a mound, platform or monumental terrace with certainty. Test excavation, magnetometry, or a more detailed topographical analysis would possibly find one or more terraces, as are present at Chiaramaya and elsewhere.
The sherd scatter extends over 7.75 ha and is very dense. All periods are represented, but especially notable are the Formative period and Late Horizon (Inka) occupations. Sector A covers 2.25 ha and has a population index value of 113.