 In 1890 the most important site of Ice Age animals in Switzerland was discovered in Niederweningen.Particularly the uppermost deposits with the so-called "Mammut" turf layer were studied up in about depth, and between 1983 and 1985 by three research boreholes to a depth of .In 2003 the remains of a Mammoth were found, and further finds resulted in the establishment of the present Mammutmuseum Niederweningen near the site of the first findings.