The cache is a round, clear rubbermade-type container with a white lid. Cache contains numerous trinkets including several geodes, small tape measure, GPS book, compass/thermometer keychain, calipers, ruler, etc., etc., etc. Enjoy the scenery... this is an awsome place to appreciate plant diversity and some of Iowa's natural flora and fauna. (bring your binoculars birdwatchers!)
A word of caution... as with many rural areas in Iowa, Yellow (or wild) Parsnip has found its way into the area. For those not familiar, it has a hexagonal stem with a yellow, umbrella like flower. The oils of this plant can be photo-reactive and can cause a minor rash-like burn (Phytophotodermatitis or PPD) to those that are susceptable... although a good sunscreen will usually prevent most reactions. But, if you keep on the paths (for the most part) you shouldn't have any problems with the parsnip...
PS - If you enjoy this cache hunt be sure to thank the caretakers of this area (if you see them) for allowing placement of the cache; and remember to "tread lightly".