Pyramid Power has these relationships to other tropes:

parents kids shares a parent with:
Alternate Landmark History
Stock Unsolved Mysteries
parent child
Alternate Landmark HistoryEenie Meenie Miny Moai
Stock Unsolved MysteriesWho Shot JFK
''Phlebotinum Killed The Dinosaurs
''Lost Roman Legion
''Jesus The Early Years
''Jack The Ripper
''Roswell That Ends Well
''Bermuda Triangle
''The Tunguska Event
''The Men In Black
You'll need to Get Known if you want to add or modify these relationships.