From the bridge of Attargu, cross the Spiti river by a pucca bridge and follow the Pin - one of the major tributaries of the Spiti - upstream. Drive through the villages of Chidang and Gyuling. Arrive at the tri-junction of Spiti, Pin and Khamengar valleys with the villages of Pokchung, Khar and Sangam on the three sides. Drive a little further up the Parachio Nalla, cross it over the bridge to reach the village of Sangam, situated on the true left bank of Pin river. Camp near the village.

The Pin Valley is known to be full of wildlife - ibex, khangral, marmot, bharal, are commonly seen on the high slopes with the elusive snow leopard occasionally visible looking for prey. In the afternoon walk around and explore the Pin valley.

Visit the monastery at Ghungri which is the main centre of the Nyingma pa sect in Spiti. The monastery is believed to have been founded by Guru Padmasambhava. It has undergone repeated repairs but contains some carved wooden specimens which are definitely old. The monastery must have remained an ancient monastic site of the Padmasambhava days. Generally, Tibetan monasteries are built in a compact layout with all the temples and apartments put together. But the monastery at Ghungri is formed of three detached rectangular blocks facing due east, the lha-khang being on the higher terrace on the north followed by samdrup-chos-ling in the middle and a compact structure housing the tangyur and gongkhang on the southern end. The architectural features of the lha-khang and samdrup-chosling are typically Indian with which the monasteries and temples of Rin-chen-bZang-po period are identified. These temples may, therefore, be considered to be the oldest structures at Ghungri which may even predate the Rin-chen- bZang-po era by centuries. The sturcture at the southern end, housing the tangyur and gon-khang, is definitely of a much later date when, under the Central Tibetan influence, compact structures were being built.