LOS ANGELES — The Mars rover Opportunity is busy taking in its surroundings since arriving at its newest destination.

The solar-powered, six-wheel rover has beamed back pictures of the horizon, soil and nearby rocks. Unlike previous places it visited, the environment at Endeavour Crater is much older and contains different rocks.

Opportunity spent three years driving to the 14-mile-wide crater and finally reached the rim earlier this month.

Opportunity is exploring the Martian surface without its twin Spirit. NASA declared Spirit's mission over in late May after it failed to respond.

Both rovers landed in Mars in 2004 and lasted beyond their original three-month warranty.