This publication analyzes the regulatory gap that exists in Colombia regarding perpetual impacts generated by mining, understood as biophysical and sociocultural effects that may persist indefinitely after a mine closes. The document explains risks associated with acid mine drainage, water contamination, permanent landscape transformation, and the lack of legal, financial, and institutional instruments to respond to these impacts over the long term. It also reviews international experiences and raises the urgency of strengthening mine closure regulation to protect communities, ecosystems, and public finances.