Maybe they meant rocket artillery as in rocket assisted artillery not long range rocket launching artillery? /shrug.However it's being reported that the Ukrainians have claimed it was from rocket-artillery (big unguided rockets) but there's no MLRS style rocket Russia has which has a warhead around that size (no 220mm rockets with a 2000lb warhead and TOS-1 thermobaric doesn't dig deep craters like this)
And it's wreckage after it was shot downIn fact there is only the large FAB-1500 unguided bomb which matches up (3300lb bomb) but this is carried by the very large Tu-22M bombers which would have been widely noticed due to it's size and rarity
Crazy idea here, but considering where this war is being fought is it possible a Russian artillery strike set of an unexploded German/Soviet WW2 bomb?