(CNN) -- [Updated 3 p.m. Monday, October 8] Tourists admire the Red Beach scenic area in Panjin, China, last week.
The beach gets its color from a type of seaweed that grows green in the spring and then turns red as it matures. You can see more photos of it here.
One iReporter who recently traveled to the beach called it a "sea of red."
"The view was amazing," rachelgeesa said. "The contrasts between the red ground, white cranes and green ground were profound."
Congrats to CNN.com reader "lvnvrfails" for being the first to answer correctly in this week's photo challenge.
[Original post] Do you know where this photo was taken?
If you think you know the answer -- or if you just want to take a wild guess -- post it in the comments area below. Later in the day, we'll reveal where the photo was taken and give credit to those who figured it out first. (The more detail, the better!)
Each Monday morning, we'll post a new photo and challenge you to tell us its origin. The photo might be related to a prominent news story or theme -- or it might just be something that caught our eye.
CNN's Christina Zdanowicz contributed to this report.