Recommended listening while attaining escape velocity.
Escape velocity is the minimum speed (with correct direction) a projectile needs to free itself from the gravity holding it down. For rockets trying to leave Earth that is 25,031 miles per hour. Luckily they have sustained thrust and don't need to be going quite that fast. This cache is a super scaled down version and is comparable to launching in a pinball machine ballbearing. The inner container is not indestructible so please try not to drop it. Good luck! I promise it won't be this complicated:

This cache is placed with permission, as all geocaches should be. But a bit of stealth still goes a long way.