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.