Geological tour of Pontoise
The Lutetian limestone and the city of Pontoise
Sunday 18 September 2022, 10:00Passed
Conditions
25 places maximum. Provide good walking shoes.
Registration
Register / book: http://www.ot-cergypontoise.fr
Fabrice Dassé
The agglomeration of Cergy-Pontoise has in the Larris Park an exceptional outcrop of Lutétien limestone. It is an old quarry now listed in the regional inventory of geological heritage. We will detail the geological history of this site. Then we will head to the old town of Pontoise to discover Mont Bélien, underground cavities and construction stones.