There is an underwater solar altar that I cannot activate

[eternal lark]

I'm pretty sure it's impossible for me to activate this altar (or maybe it has another name). What happened was that I found the switch that turns it on, but instead of using it, I left so that I could activate it when I had more energy. When I returned, it was gone. It will not appear again. I cleared everything around the altar and there is no activator. I'm attaching pics so that you can identify the altar, and see that it is cleared. It's cleared much further than these pictures show. I can send more screenshots and/or videos to that effect.

My guess is that when I found the activator, it got set as "found" so it does not appear again. The fact that it was not used was not taken into account.

If I need to activate all of these altars, I'm going to be blocked at some point...

[gray delta]

Hi @eternal lark , thank you for reaching out to us! After you go back underwater to activate the orb, could you confirm if you've tried clearing additional trashes around the area?

Also, would you mind sending a quick video of you exploring the area? A simple phone recording will do, and it’ll help us spot anything that might have been missed while clearing the area! Thanks in advance

[eternal lark]

To your first point: yes, I went back several times. I cleaned more and more, further and further away.

Yes, I can absolutely send a video. I'll go and record it now.

Let me know if you need anything else. (Do you need my save files, for example?)

I went to do the video. Just to show the extent of the problem, I started cleaning further and further away. Once I was pretty far, the activator appeared. I think this is what confused me: the first time it appeared, it was very close to the altar. Maybe five or six tiles away. This time, it was much, much further. I wrongly assumed that the distance to the altar (which must be way for the game to set difficulty) was linked to which altar is was, but now I assume it's linked to how many have been activated so far. The first time, it would have been one of my first. This time, it would have been the tenth.

Anyway, thank you for your guidance, and I'm sorry I panicked. No bug here after all. (And I was so sure, too!)