Kadamba (345 – 525 CE) was an ancient royal dynasty of Karnataka, India that ruled northern Karnataka and the Konkan from Banavasi in present-day Uttara Kannada district. At the peak of their power under King Kakushtavarma, the Kadambas of Banavasi ruled large parts of modern Karnataka state. The dynasty was founded by Mayurasharma in 345 CE which at later times showed the potential of developing into imperial proportions, an indication to which is provided by the titles and epithets assumed by its rulers. King Mayurasharma defeated the armies of Pallavas of Kanchi possibly with help of some native tribes. The Kadamba fame reached its peak during the rule of Kakusthavarma, a notable ruler with whom even the kings of Gupta Dynasty of northern India cultivated marital alliances. The Kadambas were contemporaries of the Western Ganga Dynasty and together they formed the earliest native kingdoms to rule the land with absolute autonomy. The dynasty later continued to rule as a feudatory of larger Kannada empires, the Chalukya and the Rashtrakuta empires, for over five hundred years during which time they branched into minor dynasties known as the Kadambas of Goa, Kadambas of Halasi and Kadambas of Hangal.
What ruler ruled at the peak of Kadamba power? (If the question is unanswerable, say "unanswerable")
King Kakushtavarma