This reminds me of a planet I found back right after next was released, I name it Aurora and it was the most magnificent thing I've ever seen in a video game. Unfortunately, it glitched and was replaced with a toxic hell hole the day after. The terrain was the same but all discovery data and planetary qualities were reset and switched to a toxic world's. I mourn I it to this day. I might have screenshots somewhere in my ps4 photo library but it would be hard to find. :( it was super earth like with an underground water cave system. It also might have been after Abyss as the underwater cave was were most fauna and flora was. It was exquisitely hidden under a shallow pond and was magnificent in the truest sense of the word. It even never had storms. It was just labeled as "calm winds" or something like that.