The new bike path around the back side of USAG Humphreys (K-6) was recently finished and I felt there should really be some caches along it. This isn't a power trail - good hiding places are limited so I chose to place fewer, better caches and some are up to half a mile apart. There is very little traffic along the trail so muggles should not be too much of a concern; that may change when the west side of USAG Humphreys is completed. My wife loves coffee so when we placed these caches we did so with the "T House" at the end of the trail in mind - hence the name of the series.
Keep in mind that the distance from the current beginning of the trail to the current end of the trail is 10 km (6.2 miles), if you aim to get all the caches and don't have someone to meet you on the far end you can expect to bike at least 20 km. If you choose to walk the trail you can take the 16 bus from Pyeongtaek Station/AK Plaza to very near the first cache and catch the 15/15-2 bus back from right in front of the "T House." Depending on the time of year insect repellent is a must when hiking/biking this trail.