Genshin Impact | The Mystery Of Tecoloapan Beach Quest Guide & How To Unlock

Anemo
Anemo Traveler	Chasca
Jean	Kaedehara Kazuha
Mizuki	Varka
Venti	Wanderer
Xianyun	Xiao
Hydro
Childe	Columbina
Furina	Hydro Traveler
Ayato	Mona
Mualani	Neuvillette
Nilou	Kokomi
Sigewinne	Yelan
Geo
Albedo	Arataki Itto
Chiori	Geo Traveler
Linnea	Navia
Xilonen	Zhongli
Zibai
Electro
Clorinde	Cyno
Electro Traveler	Flins
Ineffa	Keqing
Raiden Shogun	Varesa
Yae Miko
Dendro
Alhaitham	Baizhu
Dendro Traveler	Emilie
Kinich	Lauma
Nahida	Nefer
Tighnari
Pyro
Arlecchino	Dehya
Diluc	Durin
Hu Tao	Klee
Lyney	Mavuika
Nicole	Pyro Traveler
Yoimiya
Cryo
Aloy	Citlali
Escoffier	Eula
Ganyu	Kamisato Ayaka
Lohen	Qiqi
Sandrone	Shenhe
Skirk	Wriothesley

Anemo
Ifa	Jahoda
Lan Yan	Lynette
Prune	Sayu
Shikanoin Heizou	Sucrose
Hydro
Aino	Barbara
Candace	Dahlia
Xingqiu
Geo
Gorou	Illuga
Kachina	Ningguang
Noelle	Yun Jin
Electro
Beidou	Dori
Fischl	Iansan
Kujou Sara	Kuki Shinobu
Lisa	Ororon
Razor	Sethos
Dendro
Collei	Kaveh
Kirara	Yaoyao
Pyro
Amber	Bennett
Chevreuse	Gaming
Thoma	Xiangling
Xinyan	Yanfei
Cryo
Charlotte	Chongyun
Diona	Freminet
Kaeya	Layla
Mika	Rosaria

Last Updated: August 10, 2026 2:48 AM

The Mystery Of Tecoloapan Beach is a quest for Genshin Impact. Guide contains how to start, walkthrough, unlock and Unveil the secrets of the island within the fog & rewards.

Table of Contents

How To Unlock & Start Location
Walkthrough Chart & Tips
Rewards

All World Quest List

The Mystery Of Tecoloapan Beach - How To Unlock & Location

How To Unlock The Mystery Of Tecoloapan Beach?

Unlock By Heading To The Fog Covered Island

Map	Location

You can unlock "The Mystery of Tecoloapan Beach" by heading to the island covered in mist found at the West of Tezcatepetonco Range.

Use Koholasaurus To Swim Towards The Island

Shore Towards The Location For The Mystery Of Tecoloapan Beach

There are Koholasauris at the area towards the quest. You can use those to easily swim towards the island.

The Mystery Of Tecoloapan Beach - Walkthrough & Tips

The Mystery Of Tecoloapan Beach Walkthrough Chart

Walkthrough Guide

Once you reached the island, climb the broken ring and follow the path until you see a pedestal with a mark.
Transform into an Iktomisaurus or use Ororon and form a circle with the mark while using the ability.
Head to the tall mountains by following the quest mark.
At the tip of the mountain, you can find a mark once again so do the same thing and use Iktomisaurus's powers and form a circle with the marks to progress.
Head to the next marked area and you will find a hidden cave. There are 2 enemies facing the wall.
Use the powers of Iktomisaurus and aim at the mark to unlock a path.
Follow the path and head down to the painting on the ground. Go to the other side of the painting to unlock a new path to the ground and follow.
Use the powers of Iktomisaurus and scan the torch on the walls and place it on the shining sections.
↳ One of the Torch is at a room with a slowly closing door. After opening the door, grab the torch and quickly run away from the room.
Use the power to Iktomisaurus once again to summon a wind current to get out of the underground.
Head to the next marked area and follow the wind currents summoned by the Iktomisaurus.
↳ At the platforms, you can use the Saurian's powers to summon wind that will let you glide higher.
Grab the stone at the top of the floating ruins using the power of Iktomisaurus and place it inside the ruins then use the Iktomisaurus to progress.
Stand at the center of the seal then fight the corrupted Wayob.