Further info missing node/11314392009, see geological=meteor_crater

This should be an area with a 55km diameter node/2085932144

Gemäss Wikipedia nur eine Theorie ? Ggf. ungefähren Umkreis einzeichnen, sofern neue Erkenntnisse vorliegen node/3115121276/history

Shouldn't be a node node/2006086754 geological=meteor_crater. Only one occurrence of crater:exposed https://taginfo.openstreetmap.org/search?q=crater%3Aexposed (no idea what it should mean)

most likely a geological=volcanic_vent

unclear why ferry was removed relation/14613758/history

Which kind of crater ? node/357349420/history, see natural=crater

There's a description for "balloon tagging" : aeroway=*#Balloons

way/1373320167

There's an outer way/227647624 and an inner section, please check : way/834317236/history

Most likely a volcano ? node/359258391/history natural=crater