"On the way back to Stawell we had a chance to see a group of boulders called the Three Sisters—a curiosity oddly located; for it was upon high ground, with the land sloping away from it, and no height above it from whence the boulders could have rolled down. Relics of an early ice-drift, perhaps. They are noble boulders. One of them has the size and smoothness and plump sphericity of a balloon of the biggest pattern."  Following the Equator 

The Sisters Rocks, Western Highway, Stawell are a grouping of granite tors which form a dramatic landmark on the eastern approach to Stawell. The area has been a picnic and tourist destination since settlement in the area. The Sisters Rocks, Western Highway, Stawell are aesthetically significant at a LOCAL level. The rocks are an important landmark and object of beauty in the area. The Sisters Rocks, Western Highway, Stawell are socially significant at a LOCAL level. They are recognised by the Stawell community as an important landmark and object of natural beauty since the early settlement of the area as indicated that they were selected to represent the scenery as early as 1866. Overall, the Sisters Rocks, Western Highway, Stawell are of LOCAL significance.

http://vhd.heritagecouncil.vic.gov.au/places/113180/download-report