I'm writing an action/adventure in the same genre as Indiana Jones or Tomb Raider. I've reached the climax, where the heroes have saved their friend from death at the last moment, and the cave/tomb is about to collapse around them. Now, I have a dilemma.
I currently have a scene after this where they escape. The midboss from before is back for one last fight, and they battle above a rickety old bridge, with a literal cliff hanger before the heroes escape to the surface. But that feels like I've put something mediocre after a stunning climax.
Alternatively, I can brush the escape aside and cut to them making it out just before the rocks fall, and pivot right into the resolution; or I can do something in the middle, where the escape is exciting but they don't fight a villain.
How do I know when to stop the action? The story isn't done, but the remainder can't compete with the climax. It almost feels like a required dangling bit of story, which feels unpleasant. How much falling action can I have before it starts to drag on?
Or, put another way, would the reader feel cheated if the scene cuts to the heroes escaping the dangerous underground with the friend they've saved?
EDIT: I know I can have story follow the climax for the purposes of tying off loose ends, mending relationships, etc. What I want to know is if there's room for action after an action-y climax: in this example, whether it would be underwhelming to show an escape from the underground temple after defeating the big boss.