Fire Temple

Age	Adult
Entry	Inside Death Mountain Crater; wear the Goron Tunic against the heat
Dungeon item	Megaton Hammer (Megaton Hammer chest)
Small keys	8
Boss key	Boss Key chest
Mini-boss	Flare Dancer
Boss	Volvagia
Reward	Fire Medallion (Darunia) and a Heart Container
Gold Skulltulas	5

Get the Goron Tunic from the rolling Goron in Goron City (stop him, for example with a bomb) or buy it for 200 Rupees in the Goron Shop, which opens once you have stopped him. Without it a heat timer runs in the crater and in the temple's hot rooms.
Bring bombs; several walls and obstacles in this temple need explosives.
Sheik teaches you the Bolero of Fire at the crater entrance.

The Gorons of Goron City are locked in cells throughout the temple. Many of the eight small keys are in chests inside these cells.
The temple is tall: you work your way up through lava rooms, a boulder maze and a fire maze. Small keys open the doors on each level.
The Megaton Hammer is near the top of the temple; Flare Dancers guard parts of the way. A Flare Dancer can only be hurt after you knock out its flames – the Hookshot is good for that – then attack its core.
With the hammer, smash rusted switches and obstacles. The hammer also opens the way back down to the boss door and to the Boss Key, which is behind a locked door on the entrance floor.

Volvagia hides in the lava holes of the arena and pops its head out of one of them.
Run to the hole it rises from and hit its head with the Megaton Hammer. It is stunned for a moment – attack it with your sword (or more hammer swings).
When it flies, it breathes fire and makes rocks fall from the ceiling. Watch for falling shadows and stay away from the flames.