Where to Find The Gutanbac Shrine in The Great Sky Island

From the In-isa Shrine, head south down the stairs and follow the path to Pondside Cave.

Inside Pondside Cave, follow the narrow path, collecting Brightbloom Seeds and mining sparkly rocks for Ores like Ruby, Diamonds, and Amber. You'll need the Fuse Ability to mine.

Continue until you reach a large open area with a Bubbulfrog. Keep moving to avoid its bubbles, then equip your Bow (hold L) and aim for its head. Attach Fire Fruit to your arrows (D-Pad Up) for extra damage. Defeat the Bubbulfrog, collect the Bubbul Gem, and exit the cave.

Head to the pond on the right and collect fish.

Build a raft using the Ultrahand Ability: attach three logs side-by-side, then attach a fan to the back center. You can attach multiple fans for speed but must counter the weight at the front.

Place the raft in the river, jump on, attack the fan with your weapon, and cross to the other side.

Speak with the Ranger Construct, who will teach you how to start fires by placing flint near wood and hitting it with a Metallic Weapon.

Rest until morning and head up the hill. Defeat the enemies guarding a chest to the left of the cave entrance using your Bow and aiming for headshots. Open the chest to retrieve an Opal.

Make your way to the Mining Cave. Use the Ultrahand Ability to place a cart onto the track and attach a fan to its back.

Jump into the cart, attack the fan, and ride it into the cave.

Jump over the wall. Use Brightbloom Seeds as a light source by attacking them with your weapon.

In the large open area, look up at the ceiling to find another Bubbulfrog. Defeat it using the same method as before and collect the Bubbul Gem.

Go back, grab the cart, and bring it to the next section of the cave. Place it on the next track and speak with the Forge Construct to learn about Zonaite.

Trade Zonaite for Zonai Charges or Crystallized Charges. Take the cart to the next area and speak with the Maker Construct to learn about Device Dispensers. Use a Zonai Charge in the dispenser to receive a useful item.

Head east and enter the Pit Cave. Cook some spicy food using Spicy Peppers and another ingredient (like Fish) to increase your cold resistance for 3 minutes.

Climb through the cave to the snowy area, eat spicy food, and follow the path north into the Bottomless Cave.

Go down the stairs to find a chest containing Amber. Continue up the stairs.