Cephla Lake is a location in Breath of the Wild.
Breath of the Wild
Cephla Lake is a massive body of water, located just east of the Foothill Stable. It separates the Eldin province to the west from the Akkala province to the east. The lake is surrounded in most directions by rather steep cliffs, with a more scalable slope found to the east, crossing under the Akkala Span.
It's the largest lake in the Eldin province, and it's the only lake in the province that doesn't have thermal waters in spite of its closeness to Lake Intenoch, implying that they don't share waters.
A Raft can be found at the southern tip of the area, which can be used to navigate across the lake. The Mo'a Keet Shrine can be found on the cliff, just west of the lake. Additionally, the Sah Dahaj Shrine can be found tucked away at the far north end of the lake.
In the center of the lake, there is a Lizalfos base with a treasure chest that contains a Drillshaft. The surroundings waters have some Hyrule Bass, Staminoka Bass, Hearty Bass, and the more uncommon Voltfin Trout.
At the north-central part of the Lake, there is a circle of rocks, with several individual rocks just to the northwest. If Link tosses a rock into the circle, a Korok will appear. Just to the southwest of the circle of rocks, there is a treasure chest buried underwater, which contains ten Ice Arrows.
Nearby Korok Seeds
Pick up a rock and follow the path to the circle of rocks. Stick to the shallow water and you'll be able to walk all the way to the circle.