Bosco delle Querce is situated in the upper diluvial plain, at about 210m a.s.l., at the edge between the hilly area of the morainic arcs in the north and the terraced plateaus of the river-glacial deposits deriving from the erosion of the morainic deposits in the south. Bosco delle Querce di Seveso e Meda has been entirely constructed by man when the area was cleaned up after the accident leading to the formation of a dioxin toxic cloud on 10th July 1976. The aim was to create a forest having characteristics similar to those of the original forests, mainly consisting of Pedunculate Oaks, Scots Pines, Birch trees, Common Hornbeams, Common Alders, and White Willows.