Jack Dykinga / Agave (Agave utahensis) close up of spines with Pinyon pine cone (Pinus edulis) wedged amongst them. Grand Canyon-Parashant National Monument, Arizona, USA

Jack Dykinga / Pinyon pine (Pinus edulis) and Utah juniper (Juniperus osteosperma) on kaibab limestone spires in morning fog, North Rim, North Kalbab Trail, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Pinyon Pines (Pinus edulis) amongst petrified sand dunes on the Colorado Plataeu, Arizona

Jack Dykinga / North Kaibab Trail with Pinyon Pine (Pinus edulis) and Utah Juniper (Juniperus osteosperma), North Rim, Grand Canyon NP, Arizona, USA

Jack Dykinga / Snow on Pinyon Pines (Pinus edulis) at sunrise, East Rim Drive, South Rim, Grand Canyon NP, Arizona, USA

Jack Dykinga / Looking down into the leaves of an Agave plant {Agave utahensis} with Pinyon pine cone {Pinus edulis}, Grand Canyon-Parashant National Monument, Arizona, USA

Jeff Foott / Pinon Pine (Pinus edulis) tree on sandstone, Zion National Park, Utah

Doug Wechsler / Pinyon-Juniper woodland composed of Pinyon pine (Pinus edulis) and juniper species. Unaweep Canyon, CO, USA

Jack Dykinga / Yucca plants growing amid Pinyon pines (Pinus edulis) and oaks (Quercus sp) in the forests of Maderas del Carmen Natural Reserve, Mexico

Jack Dykinga / Snow covered Pinyon Pines (Pinus edulis) overlooking the Grand Canyon, East Rim Drive, Grand Canyon NP, Arizona, USA

Jack Dykinga / Kaibab limestone spire, North Kaibab trail, North Rim, Grand Canyon National Park, Arizona, USA with Pinyon pine {Pinus edulis} and Utah juniper {Juniperus osteosperma}

Nigel Bean / Pinyon jay carrying Pinyon pine seed {Pinus edulis} Arizona, USA