Active puzzles

What In The World Happened Here? LXXXVIII:  (Link)
Posted by AlanK
wagga knows the answer.

What In The World Happened Here? LXXXIX:  (Link)
Posted by wagga
AlanK knows the answer, or at least the name of what is under the stove

What In The World Happened Here? XC:  (Link)
Posted by Harvey Lankford
We know what kind of geographic feature is pictured