wrocław valley (pradolina wrocławska, polish) (318.52) - a mesoregion of great length, located in the silesian lowlands, with a total west-to-east length of 100 km, and a width of 10-12 km, totalling a surface area of 1220 km². from the north and the north-east, the mesoregion borders the rościsławska upland, oleśnica plain and the opole plain, from the north-west with the wrocław plain, the nysa kłodzka valley and niemodlin plain. on the very north-western tip, the wrocław valley borders the ścinawski lowland, lubin upland and legnica plain, whilst on the north-easternmost tip, it borders the chełm upland (silesian highlands), and racibórz basin.