Space invaders are attacking the solar system. While orbiting your starship around the Sun, you intercept a taunting message from the invaders. Also, you receive a message from Earth Command. "You are the only one close enough to stop the invaders. Pursue them to the planet Mercury."
To find the physcal cache, complete the adventure lab Space Invaders (AL) at the same starting location.
Enjoy caching on the riverwalk.
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