Sadly, this is just a fantasy, albeit an extremely pleasant one to muse upon. Washington DC doesn’t even have the right sort of bedrock to be particularly vulnerable to sinkholes. There’s always a tsunami though. 😉
Washington DC Destroyed – No Help Rendered; No Tears Shed
The lack of horror, grief, tears, and rendered aid is also about what I would expect or, at least, hope for. Aside from some museums and a handful of monuments, none of which would survive a sinkhole like that, are the only things in DC itself that are worth trying to save or crying over the loss of. The the majority of part-time and full-time residents certainly have no worth and wouldn’t be missed by we, the American People.