Ennedi: A second meteorite impact crater in Northern Chad? (abstract). 4th International Workshop of the ESF Scientific Network on "Impact Cratering and Evolution of Planet Earth". The Role of Impacts on the Evolution of the Atmosphere and Biosphere with regard to Short- and Long-Term Changes, p. 156-157. 1995 External links Description and exclusive pictures in the field by Alain Beauvilain Impact craters of Chad Carboniferous impact craters Carboniferous Africa Ennedi-Ouest Region