81) Montferrat-Tapou and 82) Pico Central

The extinct 81) Montferrat-Tapou glacier developed as a small cirque glacier during the Little Ice Age, beneath the ridge linking the peaks of the same name on the opposite slope to 78) Helero de Montferrat, draining into the Ara River. Its still visible moraines indicate that it reached a maximum length of 380 m and an area of 4.5 ha. In its vicinity, the Glacier of 82) Pico Central progressed, reaching a length of about 250 m. Its unfavourable south-facing orientation was compensated by the excess snow it received from the wide slope below the ridge linking the Picos Central and Montferrat peaks. The immense wedge-shaped slide carried the snow down to the glacier, giving it a headwall width of 320 m and an area of 6 ha. Both located in Aragonese territory and also known as the Heleros de Labaza, they have undergone a very similar evolution. During the decade from 1975 to 1985, known as the Stabilisation Period, they remained in the form of snowfields, but subsequently deteriorated rapidly until they disappeared in 1993. In the former location of both, some snowfields usually remain in summer, especially on the Pico Central.