Arm pump slowly after the Chozo statue comes on screen, when the camera locks and Samus starts to move again, armpump only 3 or 4 more times to clear the last spike and avoid an extra spike hit.

Requires:

{
  "doorUnlockedAtNode": 2
}
"canXMode"
"h_XModeSpikeHit"
"h_shinechargeMaxRunway"
"canShinechargeMovement"
{
  "shinespark": {
    "frames": 1,
    "excessFrames": 1
  }
}
"canShinesparkSlopeClip"
"canXRayClimb"
{
  "or": [
    {
      "getBlueSpeed": {
        "usedTiles": 16,
        "steepDownTiles": 4,
        "openEnd": 0
      }
    },
    "can4HighMidAirMorph"
  ]
}

Exit condition:

{
  "leaveNormally": {}
}

Unlocks doors:

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

Dev note: The leaveNormally is to ensure it won't be required to do the Speed block moondance blind up there.