From December 1 to 20, 2018, a multidisciplinary team from the ERC HornEast project, led by Julien Loiseau, carried out an initial excavation campaign at the medieval Islamic archaeological site of Bilet (Eastern Tigray, Ethiopia). The team was composed of Julien Loiseau (historian, Aix-Marseille University, director of the ERC HornEast project), Yves Gleize (archaeo-anthropologist, INRAP), Simon Dorso (archaeologist, Lyon-2 University), David Ollivier (topographer and archaeologist , CNRS, LA3M), Bertrand Hirsch (historian, University Paris-1 Panthéon Sorbonne), Amélie Chekroun (historian, CNRS, IREMAM), Deresse Ayenachew (historian, Debre Berhan University, ERC HornEast), Hélène Réveillas (archaeo-anthropologist, Bordeaux -Metropolis), Ca...