Old silk route is in east sikkim. The old silk route connected with Bhutan and chaina.
Whole silk route is just fabulous, you can see snow covered mt. kanchenjunga from very close.
Silk route can be visited during all the time of the year except for rainy season and winter season when the road blocked with heavy snowfall.
Silk route is home of many high altitude animals and birds like Ghoral, blue ship, hawk dear, monal, blood pheasants route started from kalimpong westbengal and passed through silery gaon aritar, ziluk, thambi, jolep la,
You can go to visit the old baba mandir, nathula pass the indo- tibbet border, gnathang velly, thambi view point ( from where can you see the whole silk route.
You have to go silk route by package.
Hotels are very basic mostly home stays, foods are simple but tasty.