Mars Hand Lens Imager (MAHLI) is placed on Curiosity’s arm and took this picture of a test drilling site in a target area called “Mojave”. (Aptly named as it does look a bit like the Mojave desert in south-western United States.) We can see that the drill bored through and even cracked, parts of the orange-brown rock like top surface. The small, shallow hole revealed a grey coloured surface where a cement like substance was found underneath. Scientists from NASA would have used this result to evaluate the drill results and assess whether additional drilling and sample testing be conducted at this location.