One of the most interesting geomorphological features found in Chirripo are the various shaped glacial forms, morraines, glacial terraces, U-shapes valleys, glacial lakes and circles as a heritage of the glacial activity dating back 25.000 years.

This park has the highest mountain in the country, Chirripo, which reaches 3.820 meters ( 12.530 feet) above sea level.

According to the stories of the indigenous peoples of the area, in 1904, Father Agustin Blessing, a missionary, became the first "white person" to conquer the peak. After that, there were formal expeditions in 1905,1913,1920,1932 and 1942. Since then, trips have become more frequent.

The highest altitudes are hit by strong winds, freezing temperatures, frequent showers and dramatic changes in temperature. In fact, Chirripo has had the coldest temperature recorded in the country: -9° C (16°F).