The intrinsic value of Eretz Yisrael.

In bentching we refer to Eretz Yisrael as a land that is "Rachava" wide or expansive   To say that Eretz Yisrael is holy, or special, we can understand, but how can we describe it as expansive?  The answer is that something that is intrinsically very valuable is precious even if we only have a small amount.  A diamond the size of an orange would be extremely valuable, but an orange is not that valuable.  Eretz Yisrael is so special that even a tiny amount would be very special.  The amount that we do have is considered expansive, based on it's value.

from a Shiur about Chanukah by Rabbi Wachsman