These are customised silk carpets.
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Bhavani Jamukkalam - craft documentation

Hand-woven carpets, or Jamukkalams as they are known are made in Bhavani, a town on the banks of the river Kaveri in Tamil Nadu.

The looms that they work on huge, and can range from up to 1 foot to about 15 feet in length. Such hand woven carpets are unique to Bhavani, and hence has the unique GI - Geographical indication tag.

Krishnaveni V
Product Design Student Coimbatore, India