Two Accessibility Tracks have now been added to the 1000 Genomes Browser
This information was built using sequence data from the phase1 dataset
The two tracks are called the 1000 Genomes Pilot Accessibility Mask and the 1000 Genomes Strict Accessibility Mask.
There is a README which describes how this data set was created. The raw bed and fasta files are also available in the accessible genome ftp directory