A single unconfirmed transaction is moving 55.8 BTC across the network. It is not yet in a block and can be replaced.
According to SENTINEL event ux_o9fgxk (source mempool.space): 55.8 BTC ENTERED THE MEMPOOL. Verify: https://mining.sentinelbtc.com/api/v1/events/unusual/ux_o9fgxk