A dhwajasthambham is a flag-pillar.
In the north you find thousands of brightly coloured flags near temples, in the south you find these flag- pillars, usually adorned with sculptures of garuDa, hanumAn or a RSi. This one had s’ankhamu, chakramu and nAmAlu. All gold (plated?).
I took these pictures at the bAla AnjaneyaswAmy temple.
You can see vynatEya, the son of vinuta, who brought amRta (nectar of immortality) to save his mother from her sister kadru.
You know vynatEya as Garuda the khagarAja on whom viSNu goes everywhere.
The omni-present one goes everywhere on the wings of the king of birds who is equal to indra in power.
- satyA s’aradA kandula