. >> reporter: karina sk, abc 7 news. >> california's coast line is getting smaller. 86% of it is erodingin some places by up to ten feet a year. dan ashley feature has bay area community that's trying to me sure it doesn become the next pacifica. >> you can look overy left shouldernd see a rather large block that h just fall. >> reporter: this crumbling cliff is dot hill. just south of santa cruz. 70 feet high with a lin of houses along the top. bert gibbs owns one of the houses. he's enjoyed the view for all of his 80 years. >> my grandfather bought the place in the early 1900s. >> reporter: but the stretch of land in front of his house is disappearing. >> little by little, we figure about a foot a year. >> reporter: whehe was a boy, there was a double row of pine trees that created a lover's lane along the cliff. by the 19 60s, those trees were falling off the edge, but there was still a two lane road in front of the houses. now that road is just a foot path. >> it does bother me 'cause i'd like to have it stopped. >> reporter: erosion has been an issue since it was founded as a summer