Tanali Wood is situated on the west side of the Bientina Marsh at the slopes of Mount Pisano, at Caccialupi in the Commune of Bientina.

It covers approximately 153 hectares, about 20 of which are low plain wood and reed thickets growing on the flood plains at the margins of the old lake bed.

The remainder, prevalently grazing ground, consists of the reclaimed land of the lake which was drained last century.

The area embraces a variety of very important habitats of Bientina Marsh: periodically flooded wet meadows, hay fields, Black Alder wet woods, reed thickets and small sheets of water.

The habitat is important for the life of many species of plants and animals, which are becoming rarer and rarer and threatened by degradation.