Irish Hills Natural Reserve

South & North Hikes

Hay bales
at the road's end

Restored Home
Madonna Rd Trailhead

Typical early trail
before getting up the hills

Prefumo Canyon Rd
Trailhead & Parking
Secret trailhead 2

Laguna Lake
Cerro San Luis
Prefumo Creek Estates (foreground)

Mine tailings
Don't take the mine trail
Photo of The Mine!?

More Irish Hills
4 of the 9 Sisters

North Trail Map
with cave locations

Rock Circle
Next to Cave 1
Photos 1 & 2

Cave 2
looking down (left)

Cave 3
Okay, I didn't find it!

Cave 4
right of the
'Real' end of trail

South Hike - Getting There

Drive to the southwest end of Madonna Rd.

Park below the restored house with the circle drive.

North Hike - Getting There

From Los Osos Valley Blvd take Prefumo Canyon Rd (0.9 mi) southwest toward the hills.

There is a circular parking area just past a bridge at the trailhead.

Secret parking in the Prefumo Creek Estates (turn in past the mobile homes).

Links | Sally & Jim Trips | Physics/Geology | SLO Sites | Coastal Photo Gallery


Hay bales at the road's end	Restored Home Madonna Rd Trailhead	Typical early trail before getting up the hills


Prefumo Canyon Rd Trailhead & Parking Secret trailhead 2	Laguna Lake Cerro San Luis Prefumo Creek Estates (foreground)	Mine tailings Don't take the mine trail Photo of The Mine!?


More Irish Hills 4 of the 9 Sisters	North Trail Map with cave locations	Rock Circle Next to Cave 1 Photos 1 & 2


Cave 2 looking down (left)	Cave 3 Okay, I didn't find it!	Cave 4 right of the 'Real' end of trail