The LFT GT stands for Lakefront Trail GeoTour. (Unofficial) It is one of many of a small section of the Lakefront Trail. The cache is near the Bill Jarvis migratory bird sanctuary.
Enjoy!
The Chicago Lakefront Trail is an 18-mile trail on Chicago's lakefront. The trailing end of the southside at 71st, and 72nd. On the north-side, it ends on a roundabout near Hollywood Ave, or Ardmore Ave if you want to go even farther.
The LFT attracts 30K visitors daily according to the Active Transportation Alliance. (Probably in the summer) The LFT passes by/through 13 neighborhoods.
The Bill Jarvis Migratory Bird Sanctuary was built in 1920, on landfill. (Just like the Marovitz golf course.) It was all fenced off to preserve the habitat and has restricted public access since. In 1968 it escaped possible demolition thanks to the immobilization of William Beecher, the director of the Chicago Academy of Science, and the Lakeview resident Bill Jarvis. He prominently lead a group of volunteers into an agreement with the Park District. The sanctuary was renamed after his death.
The sanctuary attracts a great number of birds annually, and the occasional snowy owl. Follow the little trail in. The cache is at the end of the wall. Look down.