Sandomierz Wilderness (Polish: Puszcza Sandomierska) is one of the biggest forests in southern Poland, which covers large parts of the Sandomierz Basin. Its name comes from the historical city of Sandomierz, and in the Middle Ages the wilderness' eastern edge created natural border between Lesser Poland and Red Ruthenia.
The wilderness sprawls from Tarnobrzeg in the north, to outskirts of Rzeszów in the south. Historically, it spread from Kraków to Lwów, and until today it is regarded as one of the wildest forested areas of Poland. Among animals living there, one can find various birds, deer, wild pigs, moles, foxes, wolves, snakes, various spiders and insects. The area of the wilderness is 129 115,6 hectares, and it is made mostly of pines.