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		 4 years
11 months		 17 28.9
(27.3)
2 San Andreas Fault - San Andreas Lake by bluesnote
San Mateo county, CA		 10 years 36 27.8
(27.0)
3 Mindego Hill EC – When’s It Going to Blow? by WildFlwrLady
San Mateo county, CA		 10 years
2 months		 52 19.6
(19.2)
4 Twins - separated at birth by caccbag
San Mateo county, CA		 15 years
1 month		 80 18.9
(18.7)
5 Pacifica Cliffhangers by adagissimo
San Mateo county, CA		 10 years
1 month		 66 15.3
(15.1)
6 Tarwater Creek by mblatch
San Mateo county, CA		 2 years
9 months		 19 14.8
(14.0)
7 San Bruno Mountain Earthcache by caccbag
San Mateo county, CA		 5 years
1 month		 38 13.5
(13.2)
8 Coyote Point Earthcache by caccbag
San Mateo county, CA		 5 years
2 months		 41 12.6
(12.3)
9 The Devil’s King Size Bed Emporium by Rapaladude
San Mateo county, CA		 8 years
1 month		 71 11.4
(11.2)
10 Hills of Eternity Memorial " TOMBSTONES" by Team_Conway
San Mateo county, CA		 1 year
2 months		 11 11.0
(10.0)
11 Crystal Springs Reservoir - San Andreas rift zone by shadow101
San Mateo county, CA		 19 years
6 months		 183 10.7
(10.6)
12 Surfin' Mavericks -- Pillar Point Giant Waves by 1962penny
San Mateo county, CA		 4 years
4 months		 44 9.91
(9.69)
13 The Faults of Fissure-ing in Sag ponds by Psychoticjesters
San Mateo county, CA		 12 years
11 months		 133 9.76
(9.69)
14 Tafoni of the Sandstone Caves by geodarts
San Mateo county, CA		 18 years
6 months		 215 8.61
(8.57)
15 San Pedro Creek Tidal Channel by Rapaladude
San Mateo county, CA		 8 years
1 month		 97 8.34
(8.26)
16 You don't have to tremor; it's not your fault. by SparksWG3K
San Mateo county, CA		 19 years 237 8.02
(7.98)
17 Gazing Across a Plate Boundary by joseph.kerski
San Mateo county, CA		 19 years
6 months		 257 7.61
(7.58)
18 Sag Ponds on the San Andreas Fault by Bootdisk
San Mateo county, CA		 21 years
4 months		 302 7.07
(7.05)
19 Pescadero Unconformity by kindredlaugh
San Mateo county, CA		 15 years
11 months		 242 6.59
(6.56)
20 The Rock Tells a Story by Mikaboo055
San Mateo county, CA		 1 year 18 5.99
(5.68)
21 Half Moon Bay by Rapaladude
San Mateo county, CA		 8 years
1 month		 143 5.66
(5.62)
22 Slide with the Devil's 😈 by Psychoticjesters
San Mateo county, CA		 12 years
2 months		 220 5.54
(5.52)
23 Permeable Parking - Menlo Park by Chet13
San Mateo county, CA		 11 months 20 4.72
(4.50)
24 The Ground Beneath Your Feet. by LewisClan77
San Mateo county, CA		 16 years
3 months		 357 4.57
(4.55)
25 Blueschist - Redwood City by Chet13
San Mateo county, CA		 11 months 26 3.65
(3.52)
26 Granite of the "Yankee Clipper" by Team_Conway
San Mateo county, CA		 1 year
2 months		 39 3.07
(3.00)
Total records: 26
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Statistics last updated Thursday, 11 June 2026 05:27:47 Eastern Daylight Time
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