The park is very near Paris and is just a
10-15 minute walk from the metro station 'Marie de Montreuil' (top left in the above map) which is
the last stop on line 9.
Outside the metro look for the obvious,
big and imposing Soviet-style town hall. Walk directly away from it along Ave
Walwein (BNP bank on corner). At the crossroads keep going straight - the road goes upwards. Keep walking straight, passing the large cemetary on the left. At the T-junction at the end of the road, go right and after some 60M there is a Nature Reserve sign and steps
leading up through woodland. Keep walking upwards and you will
eventually find the pond (Mare Perchée) and the surrounding habitat.