Siba castle was a squared fortified structure 1000[which?] from Kukherd and on a hill above the palm oasis at southern west of Kukherd, which added remarkably to its altitude and height. The length of its interface from the south is about 114 metres, while its southern interface extends over 112.5 metres. The structure was near the monuments of ancient bath of Siba.
The history of Siba castle goes back to the Sassanid era (226–651 BC). It was the center of government of that area. It acted as fortified military base for some time and was surrounded by a huge trench for protection. A trench was an ancient defensive strategic feature to defend the cities, castles and the forts in Persia before Islamic era.
This gigantic structure was considered a traditional defensive ancient landmark like other landmarks at that time such as huge city gates, cellars, security tunnels and underground military storages. The Castle of Siba was maintained until 1163-1192. Unfortunately it was destroyed by an earthquake in Kukherd and then by a flood in 1367 which destroyed the rest of the castle.
2. الكوخردى ، محمد ، بن يوسف، (كُوخِرد حَاضِرَة اِسلامِيةَ عَلي ضِفافِ نَهر مِهران) الطبعة الثالثة ،دبى: سنة 199۷ للميلاد **Mohammed Kookherdi (1997) Kookherd, an Islamic civil at Mehran river, third edition: Dubai
3. محمدیان، کوخری، محمد ، “ (به یاد کوخرد) “، ج1. ج2. چاپ اول، دبی: سال انتشار 2003 میلادی Mohammed Kookherdi Mohammadyan (2003), Beyade Kookherd, third edition : Dubai.
4.محمدیان، کوخردی ، محمد ، «شهرستان بستک و بخش کوخرد» ، ج۱. چاپ اول، دبی: سال انتشار ۲۰۰۵ میلادی Mohammed Kookherdi Mohammadyan (2005), Shahrestan Bastak & Bakhshe Kookherd, First edition : Dubai.
5. Peter Jackson and Lawrence Lockhart (Ed) (1986), Vol. 6th, The Cambridge History of Iran: Cambridge University Press
5.Human Anthropology in Persia
6.محمدیان، کوخری، محمد. (وصف کوخرد) ج1. چاپ دوم، دبی: سال انتشار 1998 میلادی Mohammed Kookherdi Mohammadyan (1998), Wasf Kookherd, second edition : Dubai
7.محمدیان ، کوخردی، محمد ، « مشایخ مدنی » ، چاپ دوم، دبی: سال انتشار ۲۰۰۲ میلادی Mohammed Kookherdi Mohammadyan (2002), Mashaykh Madani, second edition : Dubai