What is the likelihood that some future civilization is going to just happen to dig up a nuclear waste repository stored deep underground? Furthermore, why does

What is the likelihood that some future civilization is going to just happen to dig up a nuclear waste repository stored deep underground? Furthermore, why does nuclear waste get so much attention when there's plenty of other hazardous waste sites [1]. Why aren't we concerned about a future civilization breaching a salt mine that's been pumped full of toxic chemicals? 1. https://www.epa.gov/hwpermitting/hazardous-waste-management-facilities-and-units https://www.epa.gov/hwpermitting/hazardous-waste-management-...