Collapse: The Forgotten Mines Under America

ABC News Investigates abandoned and old mines lurking underground, sometimes causing sinkholes and other incidents across the country. Why the government may not even know they are there. ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. https://abcnews.com Download the ABC News app for the latest headlines and alerts: https://abcnews.com/devices Connect with ABC News on social media: Facebook:   / abcnews   Instagram:   / abcnews   TikTok:   / abcnews   X:   / abc   Threads: https://www.threads.net/@abcnews WhatsApp: https://whatsapp.com/channel/0029VajT... LinkedIn:   / abcnews