Use SpeedBooster to construct a structure for Moondancing that has 1 chest height block and 1 head height block to the right of it and no other Speed blocks. Crystal Flash below the lower block, exactly pixel aligned with its right side, to standup and then begin Moondancing. After Samus sinks through the floor tiles, use Grapple to return to a standing position and count an additional 145 moonfalls. Then use Grapple to return to a crouch and wiggle right and Turn-Around Aim Cancel to escape to the right. Finally, use SpeedBooster if needed to break the remaining Speed blocks and reach the door.

Requires:

{
  "notable": "Speed Block Moondance"
}
"h_canCrystalFlash"
"canTrickyJump"
"canTurnaroundAimCancel"
"h_getBlueSpeedMaxRunway"
"canTemporaryBlue"
"canExtendedMoondance"
"canSpeedball"

Exit condition:

{
  "leaveWithStoredFallSpeed": {
    "fallSpeedInTiles": 2
  }
}

Unlocks doors:

{"types":["ammo"],"requires":[]}