Recently I had been looking for a specific map of a local trail system and found a map store near me that might have it, and had seen this exact map in the store. Crazy to see it here a couple days later!
Print regular map in a design you like and hang it upside down. It's literally that. Or if you want to be strict you can use "flip" function in image editing tool. You can compensate me for saving your money
To be fair, it's nice to have the typography rearranged to work upside down.