Take the tarred Molotte path to the right of the Essey-la-Côte chapel, finish on foot on the steep path. Admire the scenery and look around for pieces of basalt.
Nice little 13th century Christian chapel with a great view of the Vosges, commented with a viewpoint indicator. There are benches and a picnic table next to the chapel.
Another great point is the water tap behind the chapel !