Last week, I discussed some of the interesting animals that appear in the seasonal wetlands known as vernal pools. This is an especially appropriate topic for this column, as our area of the Llano Uplift is well known for its diverse vernal pools. Several readers commented on last week’s article that they enjoy hiking each spring to the top of Enchanted Rock to see the isolated vernal pools there come to life. Vernal pools may form in depressions of bare rock (as on Enchanted Rock), or in ...