Ogulin-Plaški valley (Croatian: Ogulinsko-plaščanska udolina) is a valley in the mountainous part of central Croatia, named after the towns of Ogulin and Plaški. It is located at an elevation of 300 to 380 meters above sea level, surrounded by the Dinaric Alps, namely the mountains of Velika Kapela, Mala Kapela, Krpelj, Radošić, Brezovica, Hum, and Pištenik. Its total area is around 1,100 square kilometres (420 sq mi).
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- "Ogulinsko-plaščanska udolina". Proleksis Encyclopedia (in Croatian). 25 January 2018. Retrieved 26 September 2020. CS1 maint: discouraged parameter (link)