Moss Grotto Falls
Los Angeles County, California
Your visit at a glance
- Waterfall height
- 23 ft (7 m)
- Location
- Los Angeles County, California
- Access status
- Partial guide: residential street parking rules not confirmed; final section off-trail
- The walk
- About 1.3 miles return (source figure)
- Ground & access
- Narrow, degraded trail with steep drops into the ravine, then off-trail rock hopping in the creek bed. Easy to lose the route on false trails.
The trailhead is on the right side of Rubio Vista Drive between houses numbered 1351 and 1342 (listed address 1351 Pleasantridge Drive, Altadena). Hike north up the west side of Rubio Canyon. Where the trail fades, a tenth of a mile of off-trail rock hopping up the creek reaches a double waterfall: Ribbon Rock Falls below and Moss Grotto Falls on top. Return the same way.
Plan your visit
Rubio Vista Drive trailhead in Altadena up Rubio Canyon to Ribbon Rock Falls and Moss Grotto Falls
Hikespeak gives 1.3 miles round trip with 350 feet of elevation gain to the stacked pair of falls.
Narrow, degraded trail with steep drops into the ravine, then off-trail rock hopping in the creek bed. Easy to lose the route on false trails.
Where to start
Residential street at the trailhead on Rubio Vista Drive. The source does not describe parking rules; obey posted signs and do not block driveways.
Timing & water
Best after winter and spring rain; low flow in dry periods.
Before you go
No fee, pass or permit required per the source. The trail starts outside Angeles National Forest, so no Adventure Pass is needed.
Visitor informationVisit sources
More waterfalls nearby
Within 40 straight-line miles. Road and trail distances will differ.
- Ribbon Rocks Falls30 ft (9 m) · Los Angeles County, CA0.0 miSW
- Grand Chasm Falls59 ft (18 m) · Los Angeles County, CA0.0 miNE
- Suspended Boulder Falls23 ft (7 m) · Los Angeles County, CA0.1 miNE
- Roaring Rift Falls20 ft (6 m) · Los Angeles County, CA0.1 miNE
- Thalehaha Falls79 ft (24 m) · Los Angeles County, CA0.1 miNE
- Leontine Falls131 ft (40 m) · Los Angeles County, CA0.2 miNE
- Eaton Canyon WaterfallClosed until further notice after the Eaton Fire; route documentedLos Angeles County, CA1.1 miSE
Millard FallsCamp closure posted; road and falls access unverifiedLos Angeles County, CA1.7 miNW- Bailey Canyon FallsResearched walking routeLos Angeles County, CA3.7 miSE