Crystal Caverns Zone-In is an exit?
 

On Live, upon entering into CC, the only way out was to run through the zone and exit up through the geonid caves.

This brought you back to the snowed in building in front of the rygorr fort.

The crystal used to zone in was a one-way load-in, just as the geonid cave was a one-way exit. Currently, players can run into the collapsed wall at the zone in and it zones them back to the crystal in the rygorr fort. Once players zone into CC the only way out should be through the Geonid Cave.

Are you sure about this? I seem to remember being able to zone out through the zone in on live during Velious.

I concur. The only way to zone out was by going up the genoid ramp. I'll find some evidence.

I don't remember being able to zone out either, from the inside I remember it looming like the tunnel had caved in

ahh one of my favorite zones

I remember zone in from crystal click in and you being able to zone out there as well as at the end of the Geo caves pretty sure its always been like that will look to make sure but at least 95% sure that has always been the case

There was two zone outs - although I don't know the layout well enough it looks like one of them is in the orc tunnels. See this map:

http://www.allakabor.com/eqatlas/crystalcavernsmap.html

you could always zone out from the entrance area