Brown bears in the Ukrainian Carpathians mostly live in old forests, which make up 70% of the entire Carpathian forest. An important requirement for the existence of a brown bear is the presence in the forest of a dense shrubby layer, windbreaks, ravines, where it has the opportunity to hide during the day
At first, there was a wooden fortification on the site of the Khust castle. Later, on the orders of the Hungarian kings, the fortress was rebuilt and made of stone. This reconstruction took a century from 1090 to 1191. Today, the remains of the fortress are barely visible through the trees. In the middle ages, Khust castle was known as an impregnable fortress.
For the first time, defense structures appeared in the Transcarpathian region in the bronze age. Then they were settlements surrounded by earthen ramparts and ditches (Ardanivske, Stremtura (Irshava), Galish-Lovachka (Mukachevo), Borzhavskoe (vary). The best type of defense structures of the middle ages in Transcarpathia are castles of the XI-XVIII centuries.
Researchers distinguish two types of fortresses. The first was intended for overseeing the surrounding lands and receiving tribute from them, as well as for constant attacks. It's Mukachevo, Kwasowski, Bronicki, Nevitsky locks. The second type – the castle-guard of subordinated territories: Uzhgorod, Vynohradiv, Royal, Chynadievo, Serednyansky.
The area is rich in mineral waters of the carbon-chlorocalcium type: 53 explored sources. The most famous of them – Simovski, Buckovski, Kolachevskii, Verkhniobystrynske, Kelechynske. The latter's water is used for the treatment of radiation sickness
During world war II, the Hungarian government built a military defensive line in the North-Eastern Carpathians – the Arpad Line. It consisted of several belts. The first is in the Carpathian region, to protect the approaches to the main Carpathian watershed
