An interesting collection here, mostly stored outdoor, inside a fascinating location.
The info panels here are the worst I've seen so far, I am still not 100% sure about proper identification of many pieces, I hope people here will double check them and provide feedback. Just like in Sofia and Bucharest, guns here come from multiple sources, making for a very diverse and intriguing collection.
65 mm mle. 1906. French gun, used by Serbian Army in WW I:
65 mm mod. 1913. Italian mountain gun in WW I. After the war, the Italian Army replaced it with Skoda's 75/13, during WW II it was used as infantry gun instead:
The piece below is still quite an enigma. It's a 75 mm Schneider-Danglis for sure, but it's very hard to identify the exact model, is it a 06/09?
We have some info on Wikipedia: http://en.wikipedia.org/wiki/75_mm_Schneider-Danglis_06/09
But also: http://en.wikipedia.org/wiki/Canon_de_75_M%28montagne%29_modele_1919_Schneider http://en.wikipedia.org/wiki/File:76-mm_mountain_cannon_model_1909_Schneider_system_2.jpg
This is post WW I, so a bit OT here, but it's an evolution of WW I design by Skoda, with a longer barrel. Used, among others, by Polish and Yugoslavian Army
7-veld Krupp.
75 mm Krupp 1902/03 used by Dutch Army. So, how such a piece arrived in Yugoslavia? Most likely it was captured by German Army in 1940 and then used by their anti-partizan units in the Balkans.
Bulgarian Army captured some of these howitzers from Romanian Army in 1917. Serbian Army captured several pieces in 1918 http://en.wikipedia.org/wiki/10.5_cm_Feldhaubitze_M.12
Some pictures to give you an idea of the way the place looks like. There is a small indoor display, most pieces are outdoor. The location is really fascinating, the Fortress is just beutiful
If you would like to see a whole series of pictures: https://www.flickr.com/photos/massimofoti/sets/72157629743227210/