We left the museum and Boulder and began our slow meander up Boulder Mountain. It was looking pretty dark with storm clouds scraping over the 11,000 ft. summit. Up and up we went climbing out of the juniper and scrub into the aspen and pines. Higher we went until the trees thinned and shrank on the higher reaches of the mountain. It rained off and on but never heavily. The air took on a chilly feel as the temperature fell to 59 degrees.