Ember Spa

Ember Spa (ともしびおんせん, Firelight Hot Springs) is a location on Knot Island that first appeared in Pokémon FireRed and LeafGreen. It can be accessed by entering a small cave opening near the mid-section of Kindle Road. Inside the chasm are hot pools of water that heal the player's Pokémon if the player walks in the center of the sole accessible pool. An old man claims to have dug the whole spa out of a gigantic boulder, and he will give HM06 Rock Smash to the player if conversed.