I was messing around on Dune Guide looking at closed areas in the U.S., ran across this page with some history on the Guadalupe-Nipomo Dunes which is now known as Oceano Dunes (Pismo Beach). They closed a large section of the dunes in 1982, the size went from 15,000 acres to 1,500. Kind of sucks that they would close off all that land, i blame the tree huggers . Im always interested in the past so if your from the west coast and visit pismo, or even from the east coast, check out what most of us have missed. Pismo is now officially a small sandbox compared to what it once was...
http://www.duneguide.com/closed_areas_guadalupe_dunes.htm
Ariel Shots of the Dunes - http://www.californiacoastline.org/cgi-bin/image.cgi?image=8909137&mode=sequential&flags=0&year=1989
Google Maps - http://maps.google.com/maps?ie=UTF8&z=16&ll=34.934127,-120.658765&spn=0.006878,0.01281&t=k&om=1
Here is a website below with some info on pismo in it's early days and post 1982, click to see the full write up.
http://www.bob2000.com/pismo
A Few pictures courtesy of DuneGuide.com and Bob2000.com
The FAR end of pismo beach
Devil's Slide