Mars cave opening found by 7th graders

Via CNet News:

Summer vacations for a class of California seventh graders might pale in comparison to the class trip they recently took to Mars.
At least that's what astronomers might say after the class' discovery of an opening into a cave on the Red Planet.

"The students developed a research project focused on finding the most common locations of lava tubes on Mars," said their teacher, Dennis Mitchell. "Do they occur most often near the summit of a volcano, on its flanks, or the plains surrounding it?"
To answer that question, the students examined more than 200 images of Mars taken with the Thermal Emission Imaging System (Themis), an instrument on NASA's Mars Odyssey orbiter.

Using that camera, the students focused on the area around the planet's Pavonis Mons volcano. The only other similar opening near the volcano was found in 2007, when Glen Cushing, a scientist with the U.S. Geological Survey, published a research paper on the surface anomalies.