This paper presents the results of geomorphological research of the
periglacial relief on mountain Crnook (1881 m) in Southeast Serbia. The
results have showed the significant presence of modern periglacial morphology
on this mountain which is developing in azonal conditions of a periglacial
mountain environment. Research results from Crnook are significant because
they represent the continuation of similar studies on medium-high mountains
of Serbia (Kopaonik, Stara Planina). Based on a comparison of data from
Kopaonik, Stara Planina and Crnook (Nesic D., Milincic M., 2004; Belij S. et
al., 2008; Nesic D. et al., 2009; Nesic D., 2009), it can be concluded that
in similar climatic frameworks with a significant share of anthropogenic
activities, in terms of reducing the forest area in the highest parts of a
mountain, similar modern periglacial processes develop on mountains as an
indicator of azonal or boundary development framework of modern mountain
periglacial environment. During 2006-07, the project "Modern periglacial
geomorphic landforms on the mountains of Serbia" was initiated and the field
research was conducted on the high mountains of Serbia (Stara Planina,
Kopaonik, Kucaj, Beljanica, Zlatibor), and the mountains of Southeast Serbia
(Vardenik, Besna Kobila, Dukat i Crnook).