November 2015 PMID 25162535

Sliding rocks on Racetrack Playa, Death Valley National Park: first observation of rocks in motion.

Richard D Norris, James M Norris, Ralph D Lorenz, Jib Ray, Brian Jackson

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Mentions

282
Peak: 7 in May 2025
across 7 sources since Jan 2019

Extended reach

6,682,785
potential audience

Total likes

90,795

Video views

6,382,979

Mentions per month

Jan 2019 – Oct 2025

Where it's discussed

  • Facebook126 posts
  • News98 articles
  • Blogs22 articles
  • X / Twitter18 posts
  • Reddit8 posts
  • YouTube6 videos
  • Bluesky4 posts

AI synopsis

What people are saying

Discussions highlight fascination with the discovery, mentioning that the rocks move only every few years and referencing detailed scientific sources like the 2014 publication, showing deep engagement. However, some skepticism about how the movement was directly observed indicates varying levels of impact perception, as some users question the methodology or clarify the scientific consensus.

AgreementModerate agreement

Most discussions support the validity of the research, with some questioning the claims based on how the observations are categorized (direct vs. indirect).

InterestHigh interest

There is a high level of curiosity and interest, reflected in comments referencing the rocks’ movement, explanations, and the fascination shared by those who experienced the phenomenon firsthand.

EngagementModerate engagement

Participants demonstrate thoughtful engagement, mentioning methods, past beliefs, and scientific publications, showing more than superficial acknowledgment.

ImpactModerate impact

While some discussions note the scientific significance, general reactions suggest the discovery influences understanding but may not be universally perceived as transformative.

Abstract in brief

  • The first direct observation of moving rocks at Racetrack Playa was achieved using GPS devices, photography, and weather data, confirming that some rocks traveled up to 224 meters between December 2013 and January 2014.
  • The study challenges previous ideas that strong winds or thick ice could move the rocks, showing instead that the process occurs when thin ice sheets melt in the sun, break up, and are pushed by light winds.
  • During this process, floating ice panels push the rocks slowly across the surface, driven by the wind direction and water flow underneath, explaining the trail marks observed since the 1940s.]

Top posts

Most liked on X and Bluesky
Dr. Judith Hubbard
@JudithGeology · X

When I visited the Racetrack Playa as an undergrad, the mechanism was still a mystery - we were taught that it probably required ice, might need strong winter storms as well, so observation might be unsafe or even impossible! Apparently not. 3/3 https://t.co/pVFXAsTVBO

Sep 4, 2021 · 15 likes · 40,801 followers View post →
IGEO (CSIC-UCM)
@IGeociencias · X

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948. https://t.co/brnPqVLbvJ

Apr 3, 2024 · 7 likes · 2 shares · 72,150 followers View post →
AugustPamplona
@AugustPamplona · X

@Dr_TheHistories This is untrue (I guess depending on how "directly observed" is defined: do stationary cameras count?). As I can't find Richard D. Norris & James M. Norris on Twitter, I believe that @BrianDunning might have more to add to this. https://t.co/19UmYShJNj https://t.co/RpU25XN1ch

Sep 2, 2024 · 7 likes · 176 followers View post →
Mark McCaughrean
@markmccaughrean · X

@ScienceNelson Scientific paper here: https://t.co/AuGMvMPhzN

Jan 9, 2019 · 4 likes · 13,901 followers View post →
IGEO (CSIC-UCM)
@IGeociencias · X

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948.

May 13, 2025 · 2 likes · 72,150 followers View post →
原子×NA個分の軟体生物
@Hicolor_Molusk · X

@babel_main 一次資料見つけたので貼っておく。 https://t.co/mw4rtwCmad

Jun 1, 2023 · 2 likes · 87 followers View post →

All mentions

Instituto de Geociencias (CSIC-UCM)
@igeociencias.bsky.social · Bluesky

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948.

May 13, 2025 · 1 share View post →
Instituto de Geociencias (CSIC-UCM)
@igeociencias.bsky.social · Bluesky

Las trazas miden de 3 a 30 m de longitud y de 8 a 30 cm de anchura. Su profundidad media es 2,5 cm. El tamaño medio de las rocas oscila entre 15 y 45 cm, con masas hasta 20 kg. Se mueven sólo cada dos o tres años.

May 13, 2025 · 1 share View post →
Instituto de Geociencias (CSIC-UCM)
@igeociencias.bsky.social · Bluesky

Las trazas miden de 3 a 30 m de longitud y de 8 a 30 cm de anchura. Su profundidad media es 2,5 cm. El tamaño medio de las rocas oscila entre 15 y 45 cm, con masas hasta 20 kg. Se mueven sólo cada dos o tres años.

May 13, 2025 · 1 like · 1 share View post →
Instituto de Geociencias (CSIC-UCM)
@igeociencias.bsky.social · Bluesky

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948.

May 13, 2025 · 1 share View post →
IGEO (CSIC-UCM)
@IGeociencias · X

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948.

May 13, 2025 · 1 like · 72,150 followers View post →
IGEO (CSIC-UCM)
@IGeociencias · X

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948.

May 13, 2025 · 2 likes · 72,150 followers View post →
AugustPamplona
@AugustPamplona · X

This is untrue (I guess is depends on how "directly observed" is defined: do stationary cameras count?). As I can't find Richard D. Norris & James M. Norris on Twitter, I believe that @BrianDunning might have more to add to this. https://t.co/19UmYShJNj https://t.co/RpU25XN1ch https://t.co/yJobsle2x4

Sep 2, 2024 · 176 followers View post →
AugustPamplona
@AugustPamplona · X

@Dr_TheHistories This is untrue (I guess depending on how "directly observed" is defined: do stationary cameras count?). As I can't find Richard D. Norris & James M. Norris on Twitter, I believe that @BrianDunning might have more to add to this. https://t.co/19UmYShJNj https://t.co/RpU25XN1ch

Sep 2, 2024 · 7 likes · 176 followers View post →
KineticGothicTank
@TankGothic · X

@sergioa94679493 There’s literally a Wikipedia page on it. And published research, it’s not some hidden mystery or supernatural event. https://t.co/dNtihf8YHV

Apr 8, 2024 · 50 followers View post →
j
@thomaskskks · X

RT @IGeociencias: Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley…

Apr 3, 2024 · 2 shares · 14 followers View post →
ginniasa
@ginniasa · X

RT @IGeociencias: Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley…

Apr 3, 2024 · 2 shares · 20,225 followers View post →
IGEO (CSIC-UCM)
@IGeociencias · X

Imágenes y vídeo Norris RD, Norris JM, Lorenz RD, Ray J, Jackson B (2014) Sliding Rocks on Racetrack Playa, Death Valley National Park: First Observation of Rocks in Motion. PLoS ONE 9(8): e105948. https://t.co/brnPqVLbvJ

Apr 3, 2024 · 7 likes · 2 shares · 72,150 followers View post →
sackmonster
@AlaSerSer · X

@frozenaesthetic Do Racetrack Playa in Death Valley next. No one knew how the rocks moved until this article was published in 2014 https://t.co/vmn2etDAmh

Nov 10, 2023 · 1 like · 106 followers View post →
原子×NA個分の軟体生物
@Hicolor_Molusk · X

@babel_main 一次資料見つけたので貼っておく。 https://t.co/mw4rtwCmad

Jun 1, 2023 · 2 likes · 87 followers View post →
Duy
@D___U___Y · X

RT @huedaya: Sumber: - https://t.co/zy3fwh6QZ8 - https://t.co/Li9O09EvYm - https://t.co/WOvya3HWpr - https://t.co/kAvegkSS3O

Sep 8, 2022 · 2 shares · 1,206 followers View post →
Duy
@D___U___Y · X

RT @huedaya: Sumber: - https://t.co/zy3fwh6QZ8 - https://t.co/Li9O09EvYm - https://t.co/WOvya3HWpr - https://t.co/kAvegkSS3O

May 11, 2022 · 2 shares · 1,206 followers View post →
Today I Learned
@TodayILearnedOf · X

#TIL that the “sailing stones” in Death Valley move in very short 15 minute bursts due to a very specific combination of rain, freezing temperatures and wind. https://t.co/yKRgwcuOSb

Apr 11, 2022 · 401 followers View post →
Kim Hudaya
@huedaya · X

Sumber: - https://t.co/zy3fwh6QZ8 - https://t.co/Li9O09EvYm - https://t.co/WOvya3HWpr - https://t.co/kAvegkSS3O

Apr 6, 2022 · 1 like · 2 shares · 3,464 followers View post →
Dr. Judith Hubbard
@JudithGeology · X

When I visited the Racetrack Playa as an undergrad, the mechanism was still a mystery - we were taught that it probably required ice, might need strong winter storms as well, so observation might be unsafe or even impossible! Apparently not. 3/3 https://t.co/pVFXAsTVBO

Sep 4, 2021 · 15 likes · 40,801 followers View post →
sackmonster
@AlaSerSer · X

@UnZibens @EZPZisback https://t.co/vmn2etUDoh

Jun 4, 2021 · 106 followers View post →
Abi Stone @abistone.bsky.social
@AbiStone · X

Some more detail on those sliding stones https://t.co/xnhGvDMFYA published in 2014 in https://t.co/MKb8gcIDrr

Oct 15, 2019 · 1,407 followers View post →
Mark McCaughrean
@markmccaughrean · X

@ScienceNelson Scientific paper here: https://t.co/AuGMvMPhzN

Jan 9, 2019 · 4 likes · 13,901 followers View post →