MANGALORE, March 25: Tourism spots in Karnataka's Dakshina Kannada and Udupi districts are to be linked under a Tourist Circuit project. The scheme would permit tourists to visit all interesting sites in the two districts within four to five days, according to Union Civil Aviation Minister N Ananth Kumar. The tourist highlights of the districts include Malpe, Marvanthe, Pilikula, and pilgrim centres like Dharmasthala, Kollur and Subramanya.