Isa Aga (also called Vrtop or Van Korff) is a mountain peak in

Kosovo Kosovo ( sq, Kosova or ; sr-Cyrl, Косово ), officially the Republic of Kosovo ( sq, Republika e Kosovës, links=no; sr, Република Косово, Republika Kosovo, links=no), is a partially recognised state in Southeast Euro ...

and Macedonia. It is part of the

Šar Mountains The Šar Mountains (Serbian and mk, Шар Планина, Šar Planina, colloquially also ) or Sharr Mountains ( sq, Malet e Sharrit), form a mountain range in the Balkans that extends from Kosovo and the northwest of North Macedonia to north ...

and is found in the middle of the ridge. It is high.

References

{{Kosovo-geo-stub Mountains of Kosovo Šar_Mountains