File:Zwergenloch.jpg

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Tumulus in the gypsum karst area of the Harz region in Germany

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DescriptionZwergenloch.jpg	English: Shown is a feature called a tumulus in the Harz region of Germany, near Walkenried. Tumuli are rather rare and are usually only found in karst areas where gypsum occurs. The genesis of these hollow, subcircular domes can be explained by hydration of minerals such as anhydrite. Early inhabitants of the Harz region guessed that tumuli were the home of dwarfs.
Date	12 May 2013, 14:17:43
Source	Own work
Author	Lebrac

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	14:10, 5 May 2022		4,592 × 3,448 (14.52 MB)	Lebrac (talk \| contribs)	Uploaded own work with UploadWizard

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Camera manufacturer	Panasonic
Camera model	DMC-G3
Exposure time	1/30 sec (0.033333333333333)
F-number	f/5.6
ISO speed rating	160
Date and time of data generation	14:17, 12 May 2013
Lens focal length	45 mm
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	SILKYPIX(R) Developer Studio 3.1.6.5 SE
File change date and time	20:36, 12 May 2013
White point chromaticity	0.313 0.329
Chromaticities of primarities	0.64 0.33 0.21 0.71 0.15 0.06
Color space transformation matrix coefficients	0.299 0.587 0.114
Y and C positioning	Co-sited
Exposure Program	Normal program
Exif version	2.21
Date and time of digitizing	14:17, 12 May 2013
Meaning of each component	Y Cb Cr does not exist
APEX exposure bias	−0.33
Maximum land aperture	3 APEX (f/2.83)
Metering mode	Pattern
Flash	Flash did not fire, compulsory flash suppression
Supported Flashpix version	1
Color space	Uncalibrated
File source	Digital still camera
Custom image processing	Custom process

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File:Zwergenloch.jpg

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