Thank you. That looks like the cassette has come off with the whole free hub assembly and the small black piece to the mechanics left is likely the end cap. Shambles. CAV DESERVES BETTER
This happens to me whenever I drop my Hope gravel wheels. There's not a huge amount of grip provided by the end caps and when you're running a fucking massive MTB cassette like I am, there's a lot of weight (hippyisfat) to hold back.
Thank you. That looks like the cassette has come off with the whole free hub assembly and the small black piece to the mechanics left is likely the end cap. Shambles. CAV DESERVES BETTER