Where to do a 'Rains Retreat' in South Korea?

I would like to attend a 3 months "rains retreat" (Kyol-Che), in a Zen (Seon) temple in South Korea. I would have to go to a temple where they give instructions in English, though. 'Mu Sang Sa' Temple (which I hope is way cheaper for monks) seems to organize two 3 months retreat a year. Do you know other places?