Loneliest Earthcaches
Alameda county
California

Total records: 34
Rank Geocache Age Finds cCP
(nfCP)
1 Joaquin Miller Park Geology Tour by 1962penny
Alameda county, CA		 3 years
8 months		 14 26.2
(24.5)
2 HFS #11: More Than a Simple Curb Offset by jagerdorf
Alameda county, CA		 12 years
8 months		 73 17.4
(17.2)
3 The Dimond Canyon Water Gap by oaklandgeology
Alameda county, CA		 4 years
6 months		 26 17.4
(16.7)
4 HFS #6: The Swerve - San Lorenzo Creek by jagerdorf
Alameda county, CA		 12 years
9 months		 74 17.2
(17.0)
5 HFS #10: Hayward Fault Rift Zone – ADA Accessible by jagerdorf
Alameda county, CA		 14 years 82 17.1
(16.9)
6 St. James Street Slickensides by oaklandgeology
Alameda county, CA		 4 years
6 months		 27 16.7
(16.1)
7 Rosemary, thyme, basal, sanadine, & rhyolite by jagerdorf
Alameda county, CA		 16 years
6 months		 101 16.4
(16.2)
8 Caldecott “Orinda Formation”Weathering Earthcac by PathfinderMark
Alameda county, CA		 16 years
6 months		 106 15.6
(15.4)
9 HFS #5: Downtown Hayward Walking Tour by jagerdorf
Alameda county, CA		 12 years
9 months		 86 14.9
(14.7)
10 Fremont - Mission Peak EarthCache by AMobious
Alameda county, CA		 11 years
10 months		 82 14.5
(14.3)
11 Serpentine Prairie by oaklandgeology
Alameda county, CA		 4 years
6 months		 32 14.2
(13.8)
12 Hayward Fault Series #9: Montclair Two Stop by jagerdorf
Alameda county, CA		 12 years
8 months		 92 13.8
(13.6)
13 Keratophyre rock type by jagerdorf
Alameda county, CA		 10 months 7 13.0
(11.4)
14 Landslide by the Dry Creek 🍂 by Psychoticjesters
Alameda county, CA		 12 years
1 month		 97 12.5
(12.3)
15 Claremont Ribbon Chert by Wandering Ron
Alameda county, CA		 16 years
7 months		 140 11.9
(11.8)
16 HFS #4: Holy Sepulchre Cemetery-It is Alive by jagerdorf
Alameda county, CA		 12 years
5 months		 113 11.0
(10.9)
17 Mission Peak Landslide by FiveEyes
Alameda county, CA		 7 years
3 months		 68 10.7
(10.5)
18 Hayward Fault - Fremont by bluesnote
Alameda county, CA		 10 years
1 month		 98 10.3
(10.2)
19 SFBWR Serpentinite's Glow Earthcache by PathfinderMark
Alameda county, CA		 15 years
11 months		 165 9.67
(9.62)
20 Rusty Rocks, or Fallen Meteorites from Mars? ♂ by Psychoticjesters
Alameda county, CA		 11 years
11 months		 127 9.39
(9.32)
21 SFBWR Buckshot or Cannonballs? Earthcache by PathfinderMark
Alameda county, CA		 15 years
11 months		 170 9.39
(9.33)
22 Oakland streets via Bilger Quarry by Unit33
Alameda county, CA		 9 years
1 month		 104 8.80
(8.72)
23 HFS #7: Simple Curb Offset & Alquist-Priolo Act by jagerdorf
Alameda county, CA		 12 years
8 months		 146 8.70
(8.64)
24 Evolution of Pleasanton Topology by nozy nabor
Alameda county, CA		 9 years 105 8.62
(8.54)
25 Flavorful Flats -- Harvesting Ocean Salinity by 1962penny
Alameda county, CA		 4 years
7 months		 54 8.50
(8.34)
26 HFS #3: Hayward Fault Tule Pond Sag Structure by jagerdorf
Alameda county, CA		 12 years
9 months		 152 8.44
(8.38)
27 Calaveras Fault Landslide by UV980
Alameda county, CA		 4 years
7 months		 59 7.90
(7.77)
28 SFBWR Salt Pond Levee Earthcache by PathfinderMark
Alameda county, CA		 15 years
11 months		 210 7.60
(7.56)
29 HFS #1: Who used up all the Agua Caliente? by jagerdorf
Alameda county, CA		 12 years
9 months		 182 7.05
(7.01)
30 Fault Creep - California Memorial Stadium by Chet13
Alameda county, CA		 8 months 10 6.76
(6.15)
31 Del Valle Erosion by KG GeoCachers
Alameda county, CA		 5 years
8 months		 86 6.64
(6.57)
32 Hayward Fault at Fremont's Central Park by avtanski
Alameda county, CA		 19 years
3 months		 311 6.20
(6.18)
33 Lake Merritt and Oakland Geomorphology by oaklandgeology
Alameda county, CA		 1 year
3 months		 22 6.04
(5.77)
34 HFS #2: Civic Center Tectonic Hill by jagerdorf
Alameda county, CA		 12 years
8 months		 237 5.37
(5.34)
Total records: 34
1 member online
Statistics last updated Tuesday, 15 September 2026 05:26:08 Eastern Daylight Time
Powered by Geocaching HQ
Geocaching Cache Type Icons © Groundspeak, Inc. DBA Geocaching HQ. All rights reserved. Used with Permission.
Copyright © 2026 LonelyCache LC. All rights reserved. LonelyCache Terms of Use and Privacy Policy