1. Dig out around the affected area
2. leave massive dent in the surface for what seems like years
3. Maybe cover it with a few janky bits of wood and/or metal sheets that make a hideous clanking noise all day and night and have the same approximate surface friction as an ice rink so are pretty murderous to any 2-wheeled road user
4. Leave this solution to mature like a fine wine
5. I really mean single malt whiskey. You can leave it basically as long as you like
6. There is no step six.