"Accessing it?"

"It might be possible to Gate but require a slightly different technique due to the starting point being in another world. As a perhaps-comparable example, maintaining a Mindspeech link from under moving water requires a slightly different technique from the usual one." Leareth pauses, takes a very thoughtful look. "I wonder if one could Gate from there to Valdemar, since I have termini there. In fact, I wonder if I could Gate from here to Valdemar." 

"Maybe! Might sync time. Vanyel, what's the current state of things past your door?"

"...Sorry, what?" Vanyel refocuses on them. "Hmm, I can't remember what the status of the shuttle was but nobody was anywhere close to the door itself." 

"So not a danger for short tests but it would be an expenditure of an unknown amount of undisturbed-area-around-the-door."

"Sounds right. Not a high risk, necessarily, I'm pretty sure Savil didn't sense anything from the shuttle, and no one really uses the chapel anymore. But seems better to keep it short. Anyway, if you're going to test Gates, I'm going to go somewhere else. Bar - do you know if there's any kind of shielding in this place, such that magic used in here wouldn't affect the backyard or the rooms upstairs, for example?" 

The rooms are in an undefined location relative to all other parts of the establishment when their doors are not open or directly observed and it is typical for that undefined location to be at a convenient distance for radius-limited effects, though it varies in for whom it is convenient.

"All right, well, I'll hope for the best - can I get a room again, please?" 

You may have the same one again.

"Thank you." Vanyel will go upstairs to hide from the existence of a Gate. 

"Do you want something to hang your gate on?"

"Oh, of course, if you can easily make a threshold to use, that will save on energy. It does not have to be large, for a quick demonstration." He gestures at a size about a foot across. 

Large embroidery hoop.

Leareth thanks and takes him and holds the hoop, which starts to glow, and about thirty seconds there's a flash and then the inside of it clears to show the same cave where his image-device and the drone were, from a different angle. 

"Distant enough that the Gate-energy will not be detected in Valdemar," Leareth assures Cam. He peers through. "Well, that appears to work, and time does appear to be passing." A mage-light sent through shows dust-motes moving in the air. 

"So it does. It'd be really interesting if you can do it between worlds neither of which is Milliways. Is that it, should I go tell Van we're done?"

A moment's concentration and the Gate winks out. "Now I am done. And, yes, I would like to try it from Nechar's world to Velgarth as soon as he is off duty."

Cam trots up the stairs to Vanyel's room and knocks.

Vanyel pokes his head out. "Are you done? ...I didn't feel that at all, so I suppose it must be range equivalent to fifty miles, or else half a mile of solid rock in the way. That's generally what it would take for me not to feel a Gate." 

"Convenient."

"Very much so. Did it work?" 

"Yup, he made a li'l gate to the cave from before."

"Huh! What do we think that means for how magic works?" 

"Mostly 'Milliways is weird', but it's worth trying gates between Nechar's world and yours, say. Oh, and maybe quicker messages to Endorë are possible if we want to talk to them about - Maiar or anything."

Vanyel freezes midstep. "...Oh. Right. Would that work? Um, usually mages from my world can't Gate somewhere just from a picture of it, you need to have been there, I bet Leareth can do better but not clear he could Gate there if he hasn't been to your world before." 

"He can go to the world, just not the planet."