Use your to fish up a bridge from the vortex so the marble can continue. Push the marble two more times to prop up the drawbridge.
This is a story quest given by in the Storybook Vale expansion. It involves a "Mythic Trial" where you must solve puzzles to proceed.
: Follow Hades further into the trial. You will encounter a platform you need to rotate.
: After talking to Hades, the drawbridge will fall too low.
: Use your Pickaxe to break "Hunks of Marble" blocking your path or to collect crafting materials.