Gorgyra and Tartaros - g/t dialectal Pre-Greek

Considering tha apparent similarity bewteen Tartaros "hell, subterraneous
prison" and gorgyra "subterraneous chamber, prison", could we try to postulate a
corresponde G-T in two dialectal forms of Pre-Greek?
Note that Gorgyra/Tartaros pair could be analogous to Gigas/Titan.
gorgyra < *gargura < g^arg^ura < *j^arj^ura- ~ *c^arc^aro- > *t^art^aro >
tartaros


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