Spiders from the Upper Silesian coal-tips of different age and from their vicinity were worked out. The fauna is changing with the age: on the youngest (5 years) tip there dominate xero- and photophilous species, later they dissapear and were replaced first by hygro- and photophilous and then by ombrophilous forest spiders. Some rare species has been found, among them Pseudomaro aenigmaticus (a probably subterranean spider) is new to the fauna of Poland.