This challenge asks: how well can you google?
We perform a reverse image search and find out that the image was taken in Dubrovnik, specifically near Fort Lovrijenak. We can use Google Maps to find the exact coordinates which are 42.643, 18.108.
We can see two notable pieces of information - Andrew Pearce and Cafe Rouge. searching Andrew Pearce on google maps reveals that there are only a few possibilities for where this could be, then searching for a place where there is a Cafe Rouge on the same street reduces it to one option - High St, Pinner. The coordinates are 51.594, -0.382.
The photo looks like an Asian cemetery, and there is a defining feature that is the statue of the cross. We make an educated guess that the text in the background is Thai. Googling "christian cemetery thailand", we scroll down until we find an image containing the defining cross statue, which gives that it's the Kanchanaburi War Cemetery with coordinates 14.032, 99.525.
Entering these coordinates into the challenge page, we get the flag.
Our flag is:
<aside> 💡 flag{challenge11-3bf7bda966c0b4c3e0d4f6578}
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