The big reveal in the last episode was that the scanner picked-up a cavern with objects that might be man-made at the bottom of 10x. So basically the whole season could be summarized as "the scanner picked-up a cavern with objects that might be man-made at the bottom of 10x, but we won't know until we get down there."
I'm a person who rarely bails on a show. I watched the first season of this but it just got to be way too drawn out for me to slog through the second season of them finding and learning nothing of importance.
I was initially drawn to the backstory, but have given up on them actually finding something of significance. The reason I keep watching is the human factor. I'm fascinated how these guys can keep burning their life savings in an obviously futile pursuit. Maybe the money they get from the network offsets their costs.