Kasauli is one of the small towns developed by the British during the 'hey day' of the empire, and reached by a branch road from the Kalka-Shimla road. The quite beautiful hill-station of Kasauli has a Pastur Institute that produces the anti-rabies vaccine against mad dog-bite and, at the same time, treats victims who have fallen prey to the dead disease, Hydrophobia. The institute in Kasauli set up in 1900, is the oldest in India, taking care of pet, police and army dogs as well as their masters.
Side by side another institute produces other vaccines, this is the Central Research Institute affording immunity from Typhoid, small-pox, cholera and snake-bite. The Shimla Hills stand on water - parting between the Sutlej and the Giri, a tributary of the Yamuna.
South of Shimla is the Panchmunda ridge, which is crossed by a railway through a tunnel, the longest in the Kalka-Shimla run at Barog, where a series of fissure to springs occur at its flank. The first ridge above Kalka rises abruptly to pine-clad Kasauli at a height of 1,927m and is joined by a 12-km bridle path. The distance by road, however, from Kalka is 36.5-km.
