Aaron John - Five Years Without You

In fulfillment of the promise of peaceful life, symbolized by the pouring of oil upon his head , Aaron's death, as described in the Haggadah, was of a wonderful tranquility. Accompanied by Moses, his brother, and by Eleazar, his son, Aaron went to the summit of Mount Hor, where the rock suddenly opened before him and a beautiful cave lit by a lamp presented itself to his view. "Take off thy priestly raiment and place it upon thy son Eleazar!" said Moses; "and then follow me." Aaron did as commanded; and they entered the cave, where was prepared a bed around which angels stood. "Go lie down upon thy bed, my brother," Moses continued; and Aaron obeyed without a murmur. Then his soul departed as if by a kiss from God. 

The cave closed behind Moses as he left; and he went down the hill with Eleazar, with garments rent, and crying: "Alas, Aaron, my brother! thou, the pillar of supplication of Israel!" When the Israelites cried in bewilderment, "Where is Aaron?" angels were seen carrying Aaron's bier through the air. A voice was then heard saying: "The law of truth was in his mouth, and iniquity was not found on his lips: he walked with me in righteousness, and brought many back from sin"

Aaron the High Priest of Israel

by William Etty 

He is shown wearing his priest's robes and ceremonial breastplate. 

The breastplate is set with twelve jewels, one for each of the twelve tribes of Israel.

 

  Jebel Haroun which in English is the mountain of Aaron. On the peak you can see the shrine to the prophet Aaron the brother of Moses. Aaron is recoginzed as one of God's prophets according to the Quran.  A Day in Petra

The Tomb of Aaron is the burial-place of Aaron, the brother of Moses. It is disputed among Biblical scholars and archaeologists whether his tomb is on Mount Hor, near Mount Sinai in the Sinai, or at a location near Petra in Jordan

 Images of Petra

One Jewish tradition states Aaron died, and was buried on Mount Hor. Mount Hor is located near Mount Sinai in the Sinai. Others believe Aaron, known as Harun in Arabic, died and was buried on Jabal Harun, or Aaron's Mountain, near Petra in Jordan. A mosque was built at Jordanian location in the 14th century

  Aaron's Tomb

The burial-place of Aaron, which, according to Num. xx. 23-28, was Mount Hor, on the edge of the land of Edom. A later tradition, evidently of Mohammedan origin, refers to this hill as the one near Petra, called the Hill of Aaron. On its summit Aaron's tomb is still pointed out. This identification, however, does not agree with the itinerary of the Hebrews from Kadesh, as given in Num. xxxiii. 37, 38 (Jewish Encyclopedia)  Tomb of Aaron