Sandy Diggs in the Pyramids of Madness

From BoardGameGeek:

You and your opponents are archaeologists, hunting for lost treasures of the ancient world. On each turn you may visit either the market, where you can buy maps and sell artifacts, or the desert, where you can use your maps to find artifacts. Map cards are simple puzzle patterns that you can find in the “shifting sands,” a 5x5 grid of black and white tokens. When you find an artifact it flips over the tokens in the pattern, and this can lead to more discoveries for you and the other players! Note: This game is still in progress and is still being developed by the creator, so most images in the gallery have a preliminary and not final status. More information about the status of this game can be found at the designer's page: https://crabfragmentlabs.com/tomb-of-the-ancients