Pilgrims making supplications after they have stoned the smallest devil on the last day of Hajj

Day 6 - The pilgrims who did not leave Mina the 5th day are on their way to Jamarat to throw pebbles before they will eventually leave Mina for Makkah. This is the last rite to be performed during the days of Hajj.

The walls which are to be stoned are actually the same size, even though they are named as if they are different in size. Only a few years ago there were round columns to be stoned, but now they have made walls due to safety reasons.

The days and rites (extremely simplified) of Hajj:
Day 1 - 8th of Dhul Hijjah. Enter ihram. Leave Makkah and go to Mina. The tent "village" which is about 10 - 15km east of Haram al Sharif - the Mosque which contains the Kaba.
Day 2 - 9th of Dhul Hijjah. Leave Mina for Arafah 10 – 15 km east of Mina. Stay in Arafat till after sunset. Then head back towards Mina, but stop in Muzdalifa, just before Mina. Stay the night.
Day 3 - 10th of Dhul Hijjah. Pray fajr at Muzdalifa. Leave for Mina. Throw 7 pebbles on the largest wall of Jamarat. Sacrifice an animal. Cut or shave the hair on the head. Wear regular clothes.
Day 3, 4 or 5 - 10th, 11th or 12 th of Dhul Hijjah. Head back to Haram al Sharif. Perform the tawaf, the cirumambulation of the Ka'ba. Perform Sa'i, to go 7 times between Safa and Marwa. Go back to Mina and stay the night.
Day 4 and 5 - 11th and 12 th of Dhul Hijjah. Throw 7 pebbles on the 3 walls of Jamarat. Leave Mina for Mekka before sunset on the 5th - or optionally stay till the 6th day - 13 th of Dhul Hijjah and do the same as day 5.