Rožnovská brázda is an elongated trough on the upper course of the Rožnovská Bečva, east of Valašské Meziříčí, bordered to the north by the Moravian-Silesian Beskids and to the south by the Vsetín Hills. Determining the highest mountain of the trough is a gargantuan task, as troughs typically do not have prominent ridges with mountains, but rather deep valleys with rivers. Various sources cite different peaks, depending on how the boundary between the trough and the Beskids is defined:
781 m Šorstýn - according to Jaromír Demek's classification, it belongs to the trough, while Břetislav Balatka's classification, Mapy.cz, and Wikipedia place it in the Moravian-Silesian Beskids
646 m Opálený - the highest peak according to Břetislav Balatka's classification, used in ČÚZK and on Vrcholovka, only 150 m from the boundary between the trough and the Beskids
596 m Požiska - listed on Wikipedia as the highest named peak of the trough, in reality just a subsidiary peak of the Beskid hill U Vašutků S
576 m Poskla - the highest peak outside the Beskid boundary and also the most prominent peak of the entire trough