I visited dehradun last year in the month of apil with my family, i visited haridwar, risikesh and last to dehradun, the place is very nice and beautifull, it looks like a small city.
I reached there in morning and out for side seeing, first I visited Sahastradhara, there was a small water park inside it.i enjoyed there very much, from there I visited robbers cave, which contain water, as we go inside deeper, the water level will increase to the height of waist, at that time rain started falling, from there I visited forest research institute, i thought there was an animals but at that time there was no animal, i liked this tour .