Sub-Tatra Trench (; ) (514.14) is a mesoregion located below the Tatra Mountains, part of the Orava-Podhale Depression. The trench divides the Choàand Tatra Mountains from the Spià ¡âÂÂGubaà Âówka Highlands.
The region has an elevation of between 700 and 1000 m.a.s.l. It is formed from Eocene marlstone slates (Podhalaà Âski Flysch). In Poland, the area has a total length of 20 km and a total surface area of 130 kmò. The regional valleys incline in the north, covered with alluvial fans, formed via upper course river flow. The Zakopane Valley has three gravel top soil coverings from three separate glacial periods. The western part and eastern borderlands of the Podtatrzaà Âski Trench are forested. The main brooks that drain through the valley are the Czarny Dunajec, as well as the Zakopianka and Poroniec (sources of Biaà Ây Dunajec).
The region is characterised by the settlement areas of Zakopane, as well as Koà Âcielisko, Maà Âe Ciche and Murzasichle.