WHILE SCROLLING THROUGH "SAPTAGIRI" (MARCH, 1996 ISSUE) I HAVE STUMBLED UPON THE ARTICLE ABOUT SHREE KRISHNA TRICHAMBRAM MANDIR.
The Mandir is rather unusual: it comprises The Murti of Bhagavan Shree Krishna in "raudra posture" (ferocious) and The Murti of Shreemati Durga-Devi (you can find basic info on wiki)
And the article in "Saptagiri" (by prof. K.K. Moorty) traces the origin of Shree Krishna Trichambram Mandir to....Lord Shree Parashurama.
So no wonder that Shree Krishna is in ferocious pose is installed.
The following is the cite from the above-mentioned Saptagiri article:
"Once when Parashurama visited this place, He had a strange experience - He had a soul-lifting vision of Lord Krishna revealed after Kamsavadha (slaying of Kamsa).
It was quite exulting and enchanting, for Krishna appeared in All His Splendour after the Jagadodna-ranakarya by killing the dushta rakshasa Kamsa. So his rapturous joy overflowed his whole frame, as it were.
Soon Parasurama decided to perpetuate that jubilant mood of Krishna for adoration by humanity through an Image. A master sculptor was engaged.
The artistry of the sculptor commissioned, reached the consummation point with the depiction of that happy mood in The Archa-Murti. Parasurama was pleased and consecrated it in The Temple built then.
Credit goes to Parashurama for installing this rarity for worship. He then stipulated elaborate injunctions for the conduct of nitya-naimithika prayer services".
And K.K. Moorty also mentions Shree Durga Shrine:
"Another worth seeing object in the complex is the Durga Shrine built in the central part of a pond lying to the north of the main entrance.
The tank is held in high esteem; for, it has mystical powers. It never goes dry - the water level remains same in all seasons.
The Tirtha is holy and people are prohibited from using it either for bathing or washing.
The loveliness of this little pushkarini increases in the nights, when it reflects the flames of the oil lamps lit around the temple. For availing this spectacle devotees prefer visiting it in nights".
Cites from Saptagiri, March 1996 issue,
"Lord Krishna of Trichambram" article
by prof. K.K. Moorty
