Pierre d'Appel, Archaeological site in Étival-Clairefontaine, France.

Pierre d'Appel is a fortified spur at 492.3 m on the eastern end of the Répy massif, enclosing 2.5 hectares. A barrier wall and a 20-metre ditch close the western side, a palisade guards the north, and cliffs protect the rest; two entrances, north and south, cut through the defences. The flat, cracked grey rock bears grass tufts, and a weathered wooden bench with green supports stands near the edge above the valley.

The site was occupied during the Middle and Final La Tène period (La Tène C2/D1 and D2) and again in the Gallo-Roman period, not continuously from the 5th century BC. Rescue excavations ran from 1967 to 1969 after a television transmitter was planned on the eastern point, and programmed digs followed the monument's classification on 24 October 1969 until 1981. In 1967 the remains of a large wooden Celtic bridge from the second half of the 1st century BC (La Tène D2) were found at the foot of the plateau.

The name Pierre d'Appel likely comes from the "pierre de la poêle", a cup-marked stone at the site's eastern tip. Over the centuries the place was also called camp de Répy, camp des Gaulois or des Romains, and château des Sarrasins or des Suédois. Finds point to warriors, aristocrats with Italian pottery, bronzesmiths and blacksmiths, and Gallo-Roman worshippers at a shrine roofed with tegulae.

The site is reached on foot; the nearest parking lies below the hill, and the climb to the 492.3 m plateau is steep. Paths turn muddy after rain, so wear sturdy boots. The 2.5-hectare interior is enclosed by a rampart and ditch on the west and a palisade on the north, with entrances to the north and south.

Ceramic fragments and wine containers found at the location show that inhabitants traded across long distances, including with regions in Italy. These discoveries prove the settlement maintained connections with distant areas despite its remote location.