How do I activate this portal in the Mountain Ghost Town?

I have all three powers, the rage arm, and all mementos. Can I activate this portal, between A & B, yet?

map

The red secret book seems to be related.

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Solution 1:

I’m at 100% completion and that portal isn’t active. I don’t think it can be activated. I think that red book is a red herring or it had to do with the other portals.