The original cache ELST #4 was archived because no one could get to it while the nearby round-about was constructed. Now that the construction is done, I checked and the cache is still there. So although this is officially a new a cache, in reality it is not new. But I guess someone will still get to claim a FTF. The following is the text that was on the original cache.
The East Lake Sammamish Trail follows a historic railroad route along the eastern shore of Lake Sammamish within the cities of Redmond, Sammamish and Issaquah. Part of the “Locks to Lakes Corridor,” the trail is approximately 11 miles long and follows an off-road corridor along the lake and through lakeside communities. The existing “interim” soft-surface trail provides excellent views of the lake and Cascade foothills, and is popular with off-road bicyclists, joggers, walkers and other users. The ELST will be upgraded in phases to become a fully paved facility with soft-surface shoulders. This cache is actually not accessible when you are on the trail... You have to leave the trail to retrieve it.
Access to the northern end of the ELST is off Northeast 70th Street in Redmond, near the east side of King County’s Marymoor Park. The trail continues south through Sammamish to Issaquah. The trail is also accessible at numerous locations along its route, although no formal parking areas are currently provided. The ELST intersects with the Issaquah-Preston Trail in Issaquah near I-90, which provides a paved connection east within the Mountains to Sound Greenway Corridor.