The Space Transposer's function as an oil lamp was not complicated. Once lit, it illuminated the path beneath the user's feet, opening a road through unknown darkness in whatever direction their heart longed to go.
A magical item like this was perfect for wizarding fairy tales. Perhaps the protagonist was a prince who had been framed and imprisoned, who lit the lamp to escape a cell guarded by an evil dragon and rescue a beautiful princess.
This mystical ability to manipulate space was almost comparable to that of a Time-Turner.
But it had its limitations, too.
First, its fuel was the lava secreted by a Fire Mammoth. If the destination was too far away—the moon, for instance—the lamp might not hold enough lava to get there.
Second, something just as frightening as the lamp going out midway was having a change of heart halfway along the path. If the wizard no longer wished to go forward, they might lose their bearings and become completely trapped there.
The passage did not come into existence simply because someone had walked along it. Only after they reached their destination would the entire road fully materialize.
Unless it appeared in its entirety, there was not even a way to return to the starting point.
Lost in space, unable to return to the real world, one could easily imagine what followed: a lonely, desolate wait for life to fade away.
That was precisely why Anton had asked his friends not to use this magical item for now, until he worked out a way to escape the spatial passage in an emergency.
He had initially thought Apparition or the Flight Charm would work, at least allowing someone halfway through to retrace their steps, but several attempts had all failed.
Similar passages already existed. There were several