2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35579I report on recent progress in the exciting field of Numerical Relativity, with special attention to black hole horizons.7 pages, uuencoded gzip-compressed ps file including 2 Figs. Also available at http://jean-luc.ncsa.uiuc.edu/Papers/ To appear in the ERE 94 (Menorca, Spain, Sept 94) proceedingsGeneral Relativity and Quantum Cosmologytext