The dry valleys, occupied with steppe vegetation and less with forests and forest crops, which are located in the interior of the region, on the territory of the village of Tvarditsa, the village of Bozhanovo, the village of Vaklino, the village of Gorun, the village of Ezerets and the town of Shabla , are part of the protected area “Coastal Dobrudzha” / under Directive 92/43 / EEC for the protection of natural habitats and wild flora and fauna /. The zone includes parts of the lands of three neighboring municipalities – Shabla, Kavarna and General Toshevo.
For the territory of Shabla municipality the following types of natural habitats are subject to protection in the area: Subcontinental peri-Pannonian shrubs – found in the two dry valleys between the villages of Vaklino, Bozhanovo and Tvarditsa, and between the town of Shabla, the village of Gorun and the village of Poruchik Chunchevo. They are small shrub communities of Paliurus spina-christii, Prunus machaleb, Jasminum friticans and less often Amydalus nana, which is of conservation value.
Open calciphilous or basophilic communities of Alysso-Sedion albi – found in the two dry valleys between the villages of Vaklino, Bozhanovo and Tvarditsa, and between Shabla, Gorun and Poruchik Chunchevo. They are a complex of grass communities dominated by cereal grasses (Koeleria sp., Festuca sp., Stipa sp.), Shrub communities and open stony areas, mainly with lichens, mosses and representatives of the genus Sedum.
Ponto-Sarmatian steppes – are found in the two dry valleys between the villages of Vaklino, Bozhanovo and Tvarditsa, and between Shabla, Gorun and Poruchik Chunchevo. The most common dominant species are Stipa pennata agg., Stipa capillata, Chrysopogon gryllus, Dischanthium ischaemum, Agropyron brandzae, Koeleria brevis, Satureja coerulea, Thymus zygoides.