It's been over five years since I last put out a puzzle! In the meantime, I've sadly archived quite a few. I hope to redress that balance over the coming months. Let's start with this puzzle. The cache is at:
Important. The cache has been returned to the original puzzle coordinates. There is no need to add an offset anymore. The coordinate checker has been updated with the final coordinates.
You can validate your puzzle solution with certitude
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Congratulations to SnailMan1 for first to solve and live2kick for first to find!