This image from NASA's 2001 Mars Odyssey spacecraft shows a false color image of the region including both Tithonium and Ius Chasmata, which includes a bluish region in both canyons. This may indicate an atmospheric haze.
Within Rover's Reach at Mars Target Area 'Alexander Hills'
This view from ASA's Curiosity Mars rover shows a swath of bedrock called 'Alexander Hills,' which the rover approached for close-up inspection of selected targets. It is a mosaic of six frames taken on Nov. 23, 2014.
Ripples Beside 'Pahrump Hills' Outcrop at Base of Mount Sharp
This northeast-facing view from the lower edge of the pale 'Pahrump Hills' outcrop at the base of Mount Sharp includes wind-sculpted ripples of sand and dust in the middle ground. It was taken by Curiosity's Navcam on Nov. 13, 2014.
Fine-Grained, Finely Layered Rock at Base of Martian Mount Sharp
This patch of Martian bedrock, about 2 feet (70 centimeters) across, is finely layered rock with some pea-size inclusions. It lies near the lowest point of the 'Pahrump Hills' outcrop, which forms part of the basal layer of Mount Sharp.
Erosion Resistance at 'Pink Cliffs' at Base of Martian Mount Sharp
This small ridge, about 3 feet long, appears to resist wind erosion more than the flatter plates around it. Such differences are among the traits NASA's Curiosity Mars rover is examining at selected rock targets at the base of Mount Sharp.
This close-up view of a target rock called 'Last Chance' was acquired by NASA's Mars rover Opportunity on March 3, 2004 of Opportunity's work on Mars. The embedded spherules evident in this image were nicknamed 'blueberries."