The Gila woodpecker nests inside the stem of the saguaro cactus where the temperature ... enough to sew through leather. The spines of the Barrel cactus were used by local people for fishing ...

Be prepared for cactus spines, thorny brush ... The highest recorded temperature at Saguaro National Park was 117 degrees F. in 1990. 1,160 plant species are found in the park 6 known species ...