Like many glaciers worldwide during the twentieth century, San Quintín appears to be losing mass and retreating rapidly.
Retreating San Quintin Glacier
These two photographs taken by astronauts only seven years apart show visible change. The first was taken by the crew of STS-068 in October 1994 and the second by the Increment 4 crew of the International Space Station in February 2002.
San Rafael Glacier in the foreground and San Quintín Glacier behind, showing change over the interval circa 1990-2000. Both giant glaciers have been retreating rapidly in recent years (BBC story).