NASA MARS Curiosity Rover Image: Curiosity bores into Windjana rock

NASA's Rover Curiosity snaps selfie at Kimberley waypoint with towering Mount Sharp backdrop on April 27, 2014 (Sol 613). 

Inset shows MAHLI camera image of rovers mini-drill test operation on April 29, 2014 (Sol 615) into “Windjama” rock target at Mount Remarkable butte. 

MAHLI Mastcam color photo mosaic assembled from raw images snapped on Sol 613, April 27, 2014. 

Credit: NASA /JPL /MSSS /Marco Di Lorenzo /Ken Kremer

Three days ago, the burning question was "To Drill or not to Drill?"

The answer has come fast and furious – "Drill, Baby, Drill !"

After spending the weekend inspecting an enticing slab of sandstone rock at "Kimberley", the team directed NASA's Curiosity rover to bore a test hole into a Martian rock target called "Windjama" on Tuesday, April 29, Sol 615, that exhibited interesting bumpy textures.

"A decision about full drilling is planned in coming days," NASA press officer Guy Webster told me today.

Engineers commanded Curiosity to perform the so called "mini-drill" operation at "Windjama"- as the site of the robots third drilling operation since touching down on the Red Planet back in August 2012.

The 1 ton robot drilled a test hole 0.63 inch (1.6 centimeters) in diameter and to a depth of about 0.8 inch (2 centimeters) using the hammering drill at the terminus of the robotic arm.

Windjama is an outcrop of sandstone located at the base of a Martian butte named Mount Remarkable at "The "Kimberley" waypoint, a science stopping point reached by the rover in early April 2014 along its epic trek to towering Mount Sharp, the primary destination of the mission.

Hazcam fisheye camera image shows Curioisty drilling into “Windjama” rock target on April 29, 2014 (Sol 615). Flattened and colorised image shows Mount Remarkable butte backdrop. 

Credit: NASA /JPL /Marco Di Lorenzo /Ken Kremer

The team is evaluating the resulting hole and powdery, gray colored tailings with the arm's high resolution MAHLI camera and other instruments to determine whether to follow up with a deep drilling operation to a depth of 2.5 inches (6.4 centimeters).

To prepare for the "mini drill" operation, Curiosity first brushed the candidate drill site off with the wire-bristle Dust Removal Tool (DRT) this past weekend, to clear away obscuring Red Planet dirt and dust hindering observations with the cameras and spectrometers.

"In the brushed spot, we can see that the rock is fine-grained, its true color is much grayer than the surface dust, and some portions of the rock are harder than others, creating the interesting bumpy textures," said Curiosity science team member Melissa Rice of the California Institute of Technology, Pasadena., in a NASA statement