on which price chart was seen crash as big as this and as fast as this ? there are no indicators on price graph with crashes like this imho so relying only on graphs is big mistake because there are at least two major factors besides those price charts and candles, I am talking about Whales who can turn whole market upside down in couple of hours and Traders on Futures Market with Leverage whose WRONG predictions may trigger huge liquidations and crash market significially.
I do understand correction of market happens naturally but "healthy" correction in a two hour time frame ? no way that is happening without above mentioned big factors imho, those are not ordinary people who cut BTC-s price by almost 10K in couple of hours.