By publishing the findings in grains rather than pounds or bushels, it's hard to imagine how much of the oats or barley was in the cache.

Interestingly, the 120,000 grains of oats works out to just 15-pounds of oats, or less than 1/2 a bushel....considering the yeild of the highest quality oat is 90 bushels an acre, this quantity was either from a very small section of land (think the size of a backyard garden plot) or could have been gathered from wild plants/plantings in the area.

Same with the barley...260,000 grains (unhusked pearls) sounds like a mess of them, but it's about 35 pounds, or 3/4 of a bushel of barley. Barley yeilds 50 bushels an acre, so this cache wasn't from a big field and also potentially could have been gathered from wild plants/plantings in the area.

Combined, the two stores would only provide (when cooked) about 450 half-cup servings...not exactly what a group/tribe would be looking at as its sustinance over any long period of time or depending on for nutrients. Simply not enough food for any group of people for any real period of time. My guess - it was there for emergencies....it's not enough to be the major source of calories in a group diet.