 GEOG: When Ira Hayes goes to visit Ed Block (Harlon Blocks father)  at his farm near Weslaco, Texas you see mountains in the background.  The Block farm was in the lower Rio Grande Valley of deep South  Texas, which is quite flat. (Despite its name, it isnt a valley at  all but the delta of the Rio Grande). The nearest mountains are in  northern Mexico, over 100 miles to the south.