gary tuchman has seen the ash cloud up close, near the volcano, a surreal and unnerving experience to say the least. here's his "360 dispatch." >> reporter: at the base of the iceland volcano, the day is cold and very clear. but up the road a short distance, what looks like a big gray curtain that very quickly closes on us. there is nothing gradual about it. visibility drops to near zero as we drive through the volcano's giant ash plume. the view out the side window looks like something you might see from the window of a submarine. you can see virtually nothing. only ten minutes away from here it's sunny. there are almost no clouds in the sky. but now it feels like nighttime. it's literally raining ash. the ash is going into my eyes, it's on the streets. we are south of the volcano. this is the way the wind is blowing. in the western part of iceland, reykjavik, the capital, where most of the people live, it's completely normal. but south of the volcano, east of the volcano, the farmer owners, the land owners, the