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The French royal cosmographer André Thevet wrote many works, including Le Grand Insulaire et Pilotage. The second volume of this work (a navigation manual), prepared in manuscript form in 1586, describes the Croatian coast and islands and includes maps of Krk, Pag, Ugljan with Pašman, Čiovo, Brač, Hvar, and Korčula. These achievements are completely unknown in Croatian scientific literature. The subject of this paper is Thevet's maps showing the Croatian islands. Their geographical content is compared to maps published in the second half of the 16th century in isolarios by Giovanni Francesco Camocio (1571), Antonio Millo (1582), and Giuseppe Rosaccio (1598). The study shows that Thevet's maps were completely different from those produced by his contemporaries, especially in terms of the contours of island coastlines and depicted geographical features. Thevet's maps were a reflection of the author's personal competence, primarily his knowledge of geography and methods of spatial data collection, processing and cartographic visualisation, and are also a vivid testimony to French insight into the geography of the eastern Adriatic coast during the Renaissance. [ABSTRACT FROM AUTHOR]

The Oštarije-Tounj area lies in the contact zone of two large geomorphological units: the Ogulin-Plaški basin and the Una-Korana plateau, along the northern edge of Dinaric karst in Croatia. This is a highly karstified landscape, with numerous surface and subterranean karst forms. The objective of this study was to determine the significance of the karst relief and the processes of its formation, with the aim of examining the interaction of these two large units during their geomorphological evolution. General and specific digital geomorphometric analyses were used, with geomorphological mapping. Within the morphogenetic approach, the morphostructural conditions of karstification, spatial distribution and significance of karst, and fluviokarst relief forms were analysed. Several dry valleys were established, indicating that this area was the important corridor for surface runoff from the Ogulin-Plaški basin towards the Una-Korana plateau. Tectonic up-lifting of the narrow zone between these two units created an orographic barrier, which hindered any further surface runoff and created the conditions for the development of karst subterranean watercourses. This paper provides a proposal of the morphogenesis model of the Ogulin-Plaški basin, summarised with the description "flattening and closure". [ABSTRACT FROM AUTHOR]