@cliffordbeshers The tin-roofish thing, or the shadow?
@cliffordbeshers Oh, this one is hard. I was thinking tin roof, garage port, wine cellar, air raid shelter, but none seems right.
@odd I think air shelter is probably right. Close enough, anyway. Now the shadow. And yes, tough one.
@odd Sure.
Here's a riddle that will probably not help at all:
What's stationary and holds stationery?
@cliffordbeshers 😃 I just remembered you say mailboxes and not post boxes, however, in this case, it’s not very far off.