The ruins of leon viejo is an archaeological site and park of the original town of leon founded by the spanish conquistador francisco hernandez de cordoba this town used to be the economic capital of the colony until its inhabitants abandoned it in 1610 infear of the constantly erupting momotombo volcano nearby the town inhabitants relocated 30 kilometers west to where the current city of leon is located archaeological excavations began recently in 1999 in 2000 leon viejo was declared a w