The Oseira Plains is a location found in Breath of the Wild.
Breath of the Wild
Located at the southwest corner of the Lake Tower region, the Oseira Plains are a windy low-elevation plain. During the daytime, visible drops as sand from the Gerudo Highlands blows, making it hard to see. The main attractions are the two Red-Maned Lynels who prowl around the Oseira Plains making this a rather dangerous area to explore. One of them is located to the south, near the Oseira Plains, while the other is located to the north, just to the east of the mountain.
Along the western walls leading up to the higher elevations there are some Rushrooms and Swift Violet on the mountain side. There are also several cracked walls that all have some goodies. There are two treasure chests that contain a Gerudo Spear and another has a Silver Rupee. There is also a Korok hiding underneath a rock, as well as a Gerudo Scimitar in the ground.
Nearby Korok Seeds
Solve the block puzzle.
Blow up the middle set of boulders, and then pick up the rock. The southern set has a chest with a Gerudo Spear, the northern set has a Gerudo Scimitar under it.