Varbitsa Pass is a mountain pass in the Balkan Mountains (Stara Planina) in Bulgaria. It connects Shumen and Petolachka crossroads.
The famous Battle of Pliska was fought in the pass on July 26, 811 between the armies of Bulgarian Empire led by Khan Krum and the Byzantine Empire under Nicephorus I which ended with a decisive Bulgarian victory and the death of the Byzantine Emperor.
References
Zlatarski, Vasil N. (1918). Medieval History of the Bulgarian State, Vol I: History of the First Bulgarian Empire, Part I: Age of Hun-Bulgar Domination (679-852) (in Bulgarian). Sofia: Science and Arts Publishers, 2nd Edition (Petar Petrov, Ed.), Zahari Stoyanov Publishers, 4th Edition, 2006. ISBN 954-739-928-4. {{cite book}}: ISBN / Date incompatibility (help) 954-739-928-4 ↩
Runciman, Steven (1930). A History of the First Bulgarian Empire. G. Bell & Sons, London. /wiki/Steven_Runciman ↩