Loneliest Earthcaches
San Luis Obispo county
California

Total records: 26
Rank Geocache Age Finds cCP
(nfCP)
1 Colluvial Deposits on East Cuesta Ridge by SLO Trekker
San Luis Obispo county, CA		 16 years 31 51.8
(50.2)
2 Klau Fault – Klau Mining District by jagerdorf
San Luis Obispo county, CA		 14 years
11 months		 29 51.7
(50.0)
3 Siliceous Shales on East Cuesta Ridge by SLO Trekker
San Luis Obispo county, CA		 15 years
7 months		 33 47.5
(46.1)
4 The Morros Earthcache by Geo_cats
San Luis Obispo county, CA		 21 years
6 months		 46 46.8
(45.8)
5 Kink Folds on East Cuesta Ridge by SLO Trekker
San Luis Obispo county, CA		 16 years 35 45.9
(44.6)
6 Oceano Dunes SVRA Restoration by 1962penny
San Luis Obispo county, CA		 4 years
8 months		 15 31.2
(29.2)
7 Gully at Soda Lake Road by Tung8
San Luis Obispo county, CA		 7 months 3 22.1
(16.6)
8 A Deep Dive into the Monterey Formation by LenaArlo
San Luis Obispo county, CA		 10 months 4 20.9
(16.8)
9 Wallace Creek by badfeet
San Luis Obispo county, CA		 17 years
4 months		 86 20.2
(20.0)
10 Soda Lake at The Carrizo Plain by slmslo
San Luis Obispo county, CA		 18 years
5 months		 139 13.3
(13.2)
11 One of Many Carrizo Plain Sag Ponds by Tung8
San Luis Obispo county, CA		 7 months 5 13.3
(11.0)
12 Wilmar Avenue Fault -- Pismo Beach by 1962penny
San Luis Obispo county, CA		 3 years
6 months		 29 12.3
(11.8)
13 The Miniature Archipelago of Pismo by Rapaladude
San Luis Obispo county, CA		 8 years
2 months		 73 11.3
(11.1)
14 The Deep Water Cycle and Serpentinite by Oreo Pony
San Luis Obispo county, CA		 17 years
11 months		 166 10.8
(10.7)
15 Spooners Cove Caves by Gummyfrog
San Luis Obispo county, CA		 10 years
4 months		 96 10.8
(10.7)
16 The Sands Of Pismo Beach by IsabellaMolly
San Luis Obispo county, CA		 9 years
9 months		 107 9.18
(9.10)
17 Reading Rocks! by bluesnote
San Luis Obispo county, CA		 10 years
11 months		 129 8.47
(8.40)
18 Monster Series: Medusa by opted-out user
San Luis Obispo county, CA		 10 months 14 6.34
(5.91)
19 Sandstone at Moonstone Beach by smccfamily
San Luis Obispo county, CA		 1 year
8 months		 30 5.57
(5.39)
20 Sea Stacks Near Dinosaur Caves by Rapaladude
San Luis Obispo county, CA		 8 years
2 months		 153 5.37
(5.33)
21 More 70 mph Geology! by 1962penny
San Luis Obispo county, CA		 3 years
6 months		 79 4.50
(4.44)
22 Pismo Beach Geodes by bluesnote
San Luis Obispo county, CA		 2 months 6 4.06
(3.48)
23 Serpentinite at Madonna Inn by Oreo Pony
San Luis Obispo county, CA		 17 years
11 months		 471 3.81
(3.80)
24 Madonna Inn Tafoni by bluesnote
San Luis Obispo county, CA		 2 months 9 2.59
(2.33)
25 Monster Series: The Hellmouth by opted-out user
San Luis Obispo county, CA		 11 months 46 2.16
(2.11)
26 Morro Rock Earthcache by Mauison
San Luis Obispo county, CA		 19 years
9 months		 1,925 1.03
Total records: 26
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Statistics last updated Tuesday, 01 September 2026 05:27:48 Eastern Daylight Time
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