What is "goes deep"

Usage examples of "goes deep".

It doesn't slope as fast as before, but it goes deep-some fifteen thousand feet down.

But you think that everything only touches me on the surface, and that nothing ever goes deep inside.

She stares at me, her emerald-green eyes seeming to examine me from head to foot, and her voice goes deep and throaty.

In a slashing motion I let fly my blade and watch as it goes deep into the top of the man's cranium.

When Jeff discovers that the feds are using his handiwork to round up Baptists and ship them by the trainload to dismal gulags in Arizona, he drops out of the system, goes deep underground, and joins the Christian revolutionary right.

My personality is sketchy and unformed, my heartlessness goes deep and is persistent.

If the cut goes deep enough to strike bone, I'm usually not going to be able to tell you much about the cutting surface.