Wooden roller

Wooden rollers, also referred to as pegs, are objects that appear only in the sub-area during the mission Climb Up the Cascading Magma in the Luncheon Kingdom in Super Mario Odyssey. They rise from the top of the ramped waterfall of lava [sic] in groups of three and start to roll down. They appear in the following order: They then sink into the lava after reaching the end of the ramp.
 * 1) One wooden roller appears in the middle.
 * 2) Two wooden rollers appear on each side of the ramp.
 * 3) Wooden rollers stop appearing for a short period of time.