The Tainted Mountain Temple

History
The Tainted Mountain was probably once a regular mountain, but was corrupted after the invasion of demonic creatures. This is only a theory, as the location is home to 'normal' monsters like Goblins and Snow Harpies during the Prologue, when the player controls Savan. But is filled with Hellhounds, Geo Saurians, and the like when the player returns in the main quest with their own character. The how and why is still largely a mystery.

The Temple entrance is located inside the Greatwall, through a door on the first floor that unlocks after the fight on the roof.

Chest Locations
Turn around as soon as you enter the area. (Dead end Area)


 * Argence


 * Cleric's Incense


 * Decoction of Bandlily

In the first open area with the Geo Saurians. Look along the edges for a small outcropping.
 * Steel Sabatons


 * Feral Cape


 * Gryphic Cloak


 * Royal Mantle

Same area, in plain sight along the path.
 * Dignified Cape
 * Meloirean Armguard


 * Harspud Sauce


 * Steel Nut Salve


 * Balmy Incense


 * Alchemickal Bangles

In the room with the ladder and water on the floor, near the upright column.
 * Steel Gauntlets
 * Gimble Gyre


 * Iron Bandings

In the room after you fight the 2 Succubi (the room with more Geo Saurians). Go left towards the cliff, the chest is tucked behind some fallen pillars. On the balcony where 2 Geo Saurians are sleeping, climb the right side of the wall. Note: You can see the chest where you get the Golden Belt from here.
 * Orilux Shield
 * Golden Belt
 * Assassin's Armguards


 * Black Leather Gloves

In the Temple Antechamber (the large open room with a broken bridge and stairs), turn left as you enter, beside the last column.
 * Darkened Gloves
 * Lancer's Sword
 * Foreign Medicament


 * Tagilus's Miracle


 * Royal Cuisses


 * Veteran's Arc

Same room, lower level. Next to a burning wagon
 * Purple Longkilt
 * Argence


 * Algid Bloom

Same room, lower level. Western wall.
 * Salomet's Secret
 * Archwizard's Helm


 * Peppermint Seed


 * Pleached Limbs

Same room, lower level. Northwestern corner.
 * Balmy Incense
 * Font of Constitution


 * Light-Cure

Grand Hall (last room) southwestern corner.
 * Jewel of Silence
 * Salubrious Brew


 * Rousing Incense


 * Warlock's Incense

Same room, northwestern corner.
 * Sultry Cowl
 * Giant Coin Pouch


 * Harspud Sauce

Same room, in the center.
 * Galvanic Razors
 * Steel Sallet


 * Meloirean Helm


 * Almace