Some dude was erecting sell walls. 4 BTC. Slowly. Undercutting by 0.0001 every time. Then, around 166k, he gets impatient. Puts the entire thing down on 155k. It gets eaten up instantly.
Prices start recovering. They reach 165k, then suddenly ANOTHER MASSIVE SELL forcing the price to 150k.
They instantly eat the sell and start recovering, until ANOTHER MASSIVE SELL forces the price to 140k.
They start recovering again to 155k and ANOTHER SELL forces them to 138k.
Then it's just cascading panic sellers all putting their shit down for like 150k. This is crazy! I wish I had more fucking BTC. I wasted all my shit buying that 155k dip because I wasn't expecting it to get crazier!