A Prayer for Rain on the Fecund Land is the final part of the Varuna Gatha questline, which involves helping Aranara friends Arapandu, Arabalika, Aranakula, and Arakunti heal the Varuna Contraption to save the waterways of Apam Woods.
How to unlock the A Prayer for Rain on the Fecund Land Sumeru World Quest in Genshin Impact
To unlock this World Quest, you first need to complete Varuna Gatha, the first part of the questline of the same name. After that, you need to complete the three quests below in any order:
Once all three are done, you'll automatically unlock A Prayer for Rain on the Fecund Land, which starts at the rest point in Apam Woods.
How to complete A Prayer for Rain on the Fecund Land in the Varuna Gatha Sumeru World Questline in Genshin Impact
Head near the Varunastra
Follow the quest marker to the front of the Varunastra, the giant blue tree structure in Apam Woods. After the dialogue with the four Aranara, a cutscene will play, revealing an entrance that leads underground. Jump into the entrance (be careful of fall damage!) and follow the path leading to the highlighted area in the mini-map.
You'll find a hidden Teleport Waypoint along the way. Make sure to unlock it to make it easier to return to this area in the future! Once that's done, head to the nearby clearing and interact with the spores at the center to clear them.
Defeat the Fungi
After clearing the spores, a Disturbed Fungus will spawn. After attacking it and getting its HP down to a certain point, it will run away. Follow the path outlined by the quest marker to find it. Be careful as the area is full of bombs. After attacking the Fungus, it will run away again. This pattern will repeat a few times until the boss is defeated.
Once the Fungus is gone, interact with Arapandu to complete the World Quest. You will learn the Rhythm of the Source Water and unlock the Wonders of the World Achievement called The Rain Seeps Into the Soil.
Check out our guide on How to find the hidden song in the Genshin Impact The Rhythm that Leads to a Gloomy Path World Quest to learn another Aranara song.