Horseshoe Lake, California

SEPTEMBER 2003 – Trees that have died from higher than normal concentrations of CO2 stand near the Horseshoe Lake within the … More

Ancient Rock Art, Utah (II)

SEPTEMBER 2003 – Two men admire the petroglyphs at the Newspaper Rock State Historic Monument in Utah, USA. © Mark … More

SEPTEMBER 2003 – Closer view of the petroglyphs at the Newspaper Rock State Historic Monument in Utah, USA. © Mark … More

SEPTEMBER 2003 – A sign mounted to a pole marks the US highway 66 in Arizona against a deep blue … More

SEPTEMBER 2003 – Point Pinos Lighthouse in Pacific Grove, California, shortly before sunset. Photo © Mark Zanzig/zanzig.com

2003 – After sunset, several palm trees create a dark silhouette against the purple sky in Palm Springs, California. Photo … More

MAY 2003 – The Angel of Independence monument (El Ángel de la Independencia) in Mexico City. Photo © Mark Zanzig/zanzig.com

SEPTEMBER 2003 – A Joshua Tree (Yucca brevifolia) stands in the barren steppe of the Joshua Tree National Park in … More

SEPTEMBER 2003 – A Joshua Tree (Yucca brevifolia) stands in the barren steppe of the Joshua Tree National Park in … More