There are a few Kachabeswarar temples and this one is very close to Singaperumal koil near Chengalpattu. This is a padal petra sthalam.
You can find a lot of information about this temple from this link.
Thirukkachur Kachabeswarar Temple
Shiva walked the streets to beg food for his devotee Sundarar. You can see that here
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