Loneliest Earthcaches
San Mateo county
California

Total records: 26
Rank Geocache Age Finds cCP
(nfCP)
1 Junipero Serra County Park Earthcache by caccbag
San Mateo county, CA		 5 years
1 month		 17 30.2
(28.5)
2 San Andreas Fault - San Andreas Lake by bluesnote
San Mateo county, CA		 10 years
2 months		 37 27.6
(26.9)
3 Mindego Hill EC – When’s It Going to Blow? by WildFlwrLady
San Mateo county, CA		 10 years
4 months		 52 20.0
(19.7)
4 Twins - separated at birth by caccbag
San Mateo county, CA		 15 years
4 months		 80 19.2
(18.9)
5 Tarwater Creek by mblatch
San Mateo county, CA		 3 years 19 15.9
(15.1)
6 Pacifica Cliffhangers by adagissimo
San Mateo county, CA		 10 years
4 months		 66 15.7
(15.5)
7 Coyote Point Earthcache by caccbag
San Mateo county, CA		 5 years
4 months		 41 13.2
(12.9)
8 San Bruno Mountain Earthcache by caccbag
San Mateo county, CA		 5 years
4 months		 43 12.5
(12.2)
9 The Devil’s King Size Bed Emporium by Rapaladude
San Mateo county, CA		 8 years
3 months		 72 11.5
(11.4)
10 Crystal Springs Reservoir - San Andreas rift zone by shadow101
San Mateo county, CA		 19 years
9 months		 183 10.8
11 The Faults of Fissure-ing in Sag ponds by Psychoticjesters
San Mateo county, CA		 13 years
2 months		 133 9.93
(9.86)
12 Surfin' Mavericks -- Pillar Point Giant Waves by 1962penny
San Mateo county, CA		 4 years
7 months		 49 9.35
(9.17)
13 Tafoni of the Sandstone Caves by geodarts
San Mateo county, CA		 18 years
8 months		 216 8.67
(8.63)
14 San Pedro Creek Tidal Channel by Rapaladude
San Mateo county, CA		 8 years
3 months		 103 8.07
(8.00)
15 You don't have to tremor; it's not your fault. by SparksWG3K
San Mateo county, CA		 19 years
2 months		 239 8.04
(8.01)
16 Hills of Eternity Memorial " TOMBSTONES" by Team_Conway
San Mateo county, CA		 1 year
5 months		 18 7.94
(7.52)
17 Gazing Across a Plate Boundary by joseph.kerski
San Mateo county, CA		 19 years
9 months		 257 7.70
(7.67)
18 The Rock Tells a Story by Mikaboo055
San Mateo county, CA		 1 year
3 months		 18 7.24
(6.86)
19 Sag Ponds on the San Andreas Fault by Bootdisk
San Mateo county, CA		 21 years
7 months		 302 7.15
(7.12)
20 Pescadero Unconformity by kindredlaugh
San Mateo county, CA		 16 years
1 month		 246 6.57
(6.55)
21 Half Moon Bay by Rapaladude
San Mateo county, CA		 8 years
3 months		 145 5.73
(5.70)
22 Slide with the Devil's 😈 by Psychoticjesters
San Mateo county, CA		 12 years
5 months		 221 5.62
(5.60)
23 Permeable Parking - Menlo Park by Chet13
San Mateo county, CA		 1 year
2 months		 24 4.87
(4.68)
24 The Ground Beneath Your Feet. by LewisClan77
San Mateo county, CA		 16 years
6 months		 359 4.60
(4.59)
25 Blueschist - Redwood City by Chet13
San Mateo county, CA		 1 year
2 months		 27 4.35
(4.19)
26 Granite of the "Yankee Clipper" by Team_Conway
San Mateo county, CA		 1 year
5 months		 47 3.03
(2.97)
Total records: 26
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Statistics last updated Tuesday, 01 September 2026 05:27:48 Eastern Daylight Time
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