I took a cab from Dehradun and started going above the hills. I went through three popular and touristic places Masoorie, Doon Hills and Rajaji National park.
After crossing ganga in Haridwar, I reached Dehradun. After staying one night in Doon university I took a cab for 200km.
Can't explain the fun and peace what I had during the entire journey. I saw Yamuna's pure and green water in Tehri.
You should go there to see the clean Yamuna. I felt very bad that what we've done with yamuna in Delhi.