New spawn location for Black Sunlight Herb?

I was following the map, when I realized my pendulum was pointing me to a direction that wasn't on the one Pyro made. Turns out there's an unaccounted for spawn location for the Black Sunlight Herbs that I happened to get. I forgot where the doors are, but this is where I found my herb. I don't know if this is a location that wasn't there when the Saga first released, or if it's always been there and nobody has gotten it before, but either way, it's worth noting that there might be spawn locations that aren't documented.

Here's a screenshot I took.