Herculean means a huge effort, after Heracles' twelve labors. He cleaned giant stables by rerouting rivers.
Heracles, called Hercules by the Romans, had to complete twelve impossible labors, like cleaning the Augean stables, which held thousands of cattle and hadn't been cleaned in years. He rerouted two rivers through them.
Cleaning out a stockyard in Fort Worth after the rodeo? A Herculean labor.
Migrating off a legacy system is a Herculean task. Like Heracles with the stables, reroute the river instead of shoveling.
Practice it in Skepsis