The Cowden Burn 's course was altered at the time of the construction of the railway through the Neilston Gap .
The Cowden Burn 's course was now runs in a man made channel to the north side of the road and next to the railway .
The Cowden Burn 's course was altered at the time of the construction of the railway through the Neilston Gap and now runs in a man made channel to the north side of the road and next to the railway .