Thorough Sampling

Overview map

Locations of all the possible spawn points of chests for #4 to #6. Note: all locations will have a bouncing mushroom at the base of the trees

Thorough Sampling is an A Crack in the Ice achievement.

Achievement

Thorough Sampling	A Crack in the Ice	7
Find each of the special chests hidden around Bitterfrost Frontier. Reward: Frozen Exotic Weapon Fragment (3) Objectives: 19 objectives in total Svanir Supplies Hot Springs Depths Hurler's Hoard Woomulla's Cache Eagle Flight's Gear Woomulla's Supplies Frozen Falls Stockpile Grawl Supplies Firestone Reserves Kodan Nest Egg Bedside Dresser Dangerous Bridge Stock Steam Crate Mushroom Trio Stash Unstable Remains Diving Trunk Frozen Ledge Package Frozen Bridge Case ... Frozen Peak Chest	1 Special Chest found in Bitterfrost Frontier	1
	5 Special Chests found in Bitterfrost Frontier	1
	10 Special Chests found in Bitterfrost Frontier	1
	15 Special Chests found in Bitterfrost Frontier	1
	19 Special Chests found in Bitterfrost Frontier	3

Walkthrough

This achievement involves opening special Icebound Chests hidden around Bitterfrost Frontier. The special chests never get frozen so you do not need Koda's Flame to open them.

	Objective	Map	Location	Notes
1	Svanir Supplies			West of Maw of Corruption. Inside the closed svanir building, use the unmarked lever on the right side of the door to open it. (The lever is not always interactive. If you don't initially have the option to pull the lever then wait a couple minutes for the surrounding mob to respawn.)
2	Hot Springs Depths			Swim down to the bottom of the hot spring at Whorl Lagoon.
3	Hurler's Hoard			Same location as the Veteran Ancient Jotun
4	Woomulla's Cache			Up in the trees that require one of thirteen bouncing mushrooms to reach in Griffon Old Growth. The chest can spawn in several locations.
5	Eagle Flight's Gear			In Griffon Old Growth, up in the trees that require one of thirteen bouncing mushrooms to reach. The chest can spawn in several locations.
6	Woomulla's Supplies			Up in the trees that require one of thirteen bouncing mushrooms to reach in Griffon Old Growth. The chest can spawn in several locations.
7	Frozen Falls Stockpile			Near Joyless Falls, use the nearby device located along the frozen river, to open a hole in the frozen waterfall to access this chest. Refer to second screenshot for device location.
8	Grawl Supplies			In the grawl tunnels of Brakbrak Ice Snarl, North of Hollow Bone Den.
9	Firestone Reserves			In the top left room of the grawl tunnels in Brakbrak Ice Snarl.
10	Kodan Nest Egg			Inside a small ice cave on the upper level of Sorrow's Eclipse Sanctuary; the opening is marked by a door frame. Refer to second screenshot for location of the frame in comparison to the Sorrow's Eclipse Vista.
11	Bedside Dresser			Talk to Thoorne in Gooloopa Deeps to get the Quaggan's Key buff. Thoorne is located directly above Thoorne's house, then swim down and use the key to enter Thoorne's house. Refer to second image for location of the house.
12	Dangerous Bridge Stock			Climb the hills directly northeast of the Whorl Lagoon to find a series of stepping stones jutting out of the hillside, leading to a wooden rope bridge. Proceed across the bridge and up another small set of stepping stones to arrive at an icy clearing filled with Icebrood Wolves. This small area contains the Icebound Chest needed.
13	Steam Crate			Start at the hill with a small stream on it northwest of Whorl Lagoon, accessed by a shallow incline near the entrance to the hotsprings. Facing the small waterfall leading into the shallow stream, look to your right to find a steep, grassy incline. The top of this incline is marked by a tree, and to the northeast you should see a series of stepping stones jutting out of the mountain. Jump across these stones, passing another stream, proceeding over a precarious wooden rope bridge, and jumping up another series of stepping stones, you will come to an area with a small body of water, a dead Quaggan, and a Thermal Tube. Activate the Thermal Tube to be launched across to the upper southern side of the hotsprings, to find a chest next to the tallest but thinnest tree in this small area. Refer to the second image for the path taken through the stepping stones jumping puzzle, which also shows the approximate location of the chest, on the player's map marker.
14	Mushroom Trio Stash			Head south from Sorrow's Eclipse Sanctuary. On a ledge above the east exit from Wayward Cave, you'll see three bouncing mushrooms. The centre mushroom will take you to the chest, as indicated in the second image.
15	Unstable Remains			In the cave behind Lockflow Ice Fall , you can use the nearby device on one of the floating islands to open a hole in the frozen waterfall and reach the cave (you will need Cold Resistance). Refer to second screenshot for location of the device.
16	Diving Trunk			In the water at the bottom of Dive Master: Cold Feet (you will need Cold Resistance)
17	Frozen Ledge Package			At the end of the ledge which lies the most southeast of The Bitter Cold (you will need Cold Resistance)
18	Frozen Bridge Case			In the western area of The Bitter Cold, on an ice bridge (you will need Cold Resistance)
19	Frozen Peak Chest			On a frozen platform southwest of Lockflow Ice Fall (you will need Cold Resistance). The easy way is to glide down from the Mastery Point.

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Bitterfrost Frontier