Interesting one this. I've been looking into ley lines for a while now and one thing that keeps coming up in my research is that certain locations seem to have consistent spots where phenomena concentrate - like the energy, if that's what it is, finds a channel and sticks to it.
The corner thing specifically might tie into how electromagnetic fields behave in enclosed spaces. Corners are where walls meet at right angles and there's some thinking that EM fields can pool or intensify in those geometries. Whether that attracts or creates shadow figures I genuinely don't know, I'm no expert.
But I've spoken to a few people locally here in the Pacific Northwest who describe the exact same corner of their bedroom or hallway, year after year, sometimes across different residents of teh same house. That consistency is what gets me. If it were random perception you'd expect more variation.
Has anyone here actually mapped the specific corner in relation to compass bearing? North-facing corners seem to come up a lot in the accounts I've read but I could be drawing patterns that aren't there.