This is one of the many forms of Avalokiteshvara comprising 108 as depicted in the Kanak Chaitya Mahavihara of Kathmandu.

He manifests in many forms in order to help sentient beings. His 1000 arms form is described as follows

His body is white. He has 1000 arms and 1000 eyes. However, his original 2 hands and 2 eyes are not included. Out of 1000 arms of Avalokiteshvara, 38 arms of this Lokeshvara are depicted with various symbols of emblems. Sometimes he is depicted with emblems with 8 arms only carrying rosary, disc, varada mudra and jewel with his right hand and lotus, bow, vase and clapping ratna with his left hands. He wears an antelope skin on his shoulders symbolizing compassionate nature. He wears all the Bodhisattva ornaments like earrings and so on. He has 11 heads. The 11 heads being his spiritual sire Buddha Amitaba. It is said that Bodhisattva Avalokiteshwara made the commitment in front of Buddha Amitabha to intentionally manifest into the 3 realms of samsara in order to liberate all sentient beings from samsara and to be their supreme guide. He also vowed if by chance his compassion and courageous mind of mercy for sentient beings were to decrease, then let his head and body just completely crack and fall into 1000 pieces. Receiving blessings from Buddha Amitabha Avalokiteshvara went through universal manifestations into the 3 realms of samsara. Read More...