Washington, D.C.
- Episode aired Feb 28, 2010
- TV-PG
- 44m
Prehistoric Washington D.C. was full of dinosaurs, and flying reptiles with 30-foot wingspans terrorized the skies over the National Mall. That was before it was Ground Zero, site of an aste... Read allPrehistoric Washington D.C. was full of dinosaurs, and flying reptiles with 30-foot wingspans terrorized the skies over the National Mall. That was before it was Ground Zero, site of an asteroid impact that wiped out all life...Prehistoric Washington D.C. was full of dinosaurs, and flying reptiles with 30-foot wingspans terrorized the skies over the National Mall. That was before it was Ground Zero, site of an asteroid impact that wiped out all life...