Wall jump off of the Upper-Left Namihe and then Spring Ball jump up and out of the Lava. Pausing early in order to get more horizontal distance by equiping Spring Ball may help.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": false
  }
}

Requires:

{
  "notable": "HiJump"
}
"Gravity"
"canSpringwall"
"HiJump"
"canUseEnemies"
{
  "lavaFrames": 180
}
"h_heatedGModeOpenDifferentDoor"

Dev note: This strat is not useful unless Samus has lava proof but not heat proof. Otherwise, the non-G-mode variant can be used. FIXME: These lava frames are lenient, they are what it would take without Gravity (the non-G-mode variant also doesnt account for Gravity).