Just outside Seattle at Exit 32 along Interstate 90 lies Little Si, the little sibling to Mt. Si next door. Little Si features World Wall 1, the crown jewel crag of Washington sport climbing with a storied history of climbing at the highest grades. First pioneered by local climber Brian Burdo in the early 90s, the wall has seen the addition of new testpieces every few years that have pushed well into the 5.14's at World Wall 1 & 2. World Wall 1's unique geography, climb density and popularity make photographing this wall particularly challenging. Combining new high-resolution wide angle photographs and rakkup's smart topo feature, this Little Si guidebook makes it incredibly easy for anyone to find the climb they're looking for.
Don't climb 5.12? That's ok, there's something here for everyone. World Wall 1 and the smaller crags nearby have many classic moderate lines in an aesthetic setting with great conditions all summer long.
Sectors in alphabetical order:
| General Information | 3 climbs |
| Little Si Crags | 126 climbs in 7 sectors |
| World Wall II | 22 climbs |
