Secret Avengers, volume 1 # 16 (Marvel Comics 2011)

Run The Mission.
Don't Get Seen.
Save The World.
A secret city buried one mile under American soil is discovered through the leakage of Von Doom radiation a type of energy emitted only by time-travel devices. 
So the Secret Avengers head underground to a weird metropolis forgotten about for decades, because a time machine in the wrong hands is the worst kind of WMD imaginable. 
Master storyteller Warren Ellis begins his tenure on Earth's Mightiest Clandestine Super-Team, illustrated by Eagle Award-winning Jamie McKelvie.

Secret Avengers volume 1 # 16 is written by Warren Ellis with art  by Jamie Mckelvie and a cover by John Cassaday.

Secret Avengers volume 1 # 16 is a 32 page comic book in full color and rated T+.