Toughness Collection

Musk ox (Ovibos moschatus), shaggy coated with curving horns

Kilauea Lava Flow #4
Red Hot glowing Lava flow from the 61G Kilauea Flow located on the Big Island of Hawaii. Hawaii Volcanoes National Park, Big Island, Hawaii, United States

Human head section
Longitudinal section of the human head

Kilauea Lava Flow #2 Horizontal
Dramatic sunset sky and Lava flow from the 61G Kilauea Flow located on the Big Island of Hawaii. Hawaii Volcanoes National Park, Big Island, Hawaii, United States

Kilauea Lava Flow #3
Dramatic sunset sky and Lava flow from the 61G Kilauea Flow located on the Big Island of Hawaii. Hawaii Volcanoes National Park, Big Island, Hawaii, United States

Symbols of the Norse culture of the Stone Age and Bronze Age
Illustration of a Symbols of the Norse culture of the Stone Age and Bronze Age

Wall decoration in St. Constanza
Drawing of Francis of Holland to the wall decoration in Santa Costanza in Rome

Illustration of two bulls fighting head to head using horns

New Zealand, South Island, Otago, Moeraki Boulders on beach
Large and round Moeraki Boulders are grey-colored septarian concretions with distinct cracks which have been exhumed from the mudstone enclosing them

Millstone
Antique illustration of a Millstone

Illustration of woman wearing leotard punching punching bag

Illustration of tough and hardy plants growing at high altitude with snow-covered mountain in background

Illustration of Bullmouth Helmet (cypraecassis rufa), empty shell showing aperture or opening

Illustration of hand holding Cuttlefish Bone (Sepiida), the white shell found inside cuttlefish

Illustration of fairy chimney rock formations in valley, Goreme National Park

Illustration of of man standing at waters edge in ravine near Gocek

Black and white illustration of using peeler to shave hard cheeses

Illustration of keeping hard cheese moist by wrapping in muslin

Illustration of obidian hand axes, Circa 11, 000 bc

Illustration of block of marble

Illustration of a piece granite made up from the minerals quartz, feldspar and mica

Illustration of Garnet in rock

Illustration of Agate, a form of Quartz

Illustration of hard contact lens

Biomedical illustration of rigid endoscope

Granite rocks in tidal zone of sandy beach at the Altanic coast of Donegal on a foggy day, Ireland

Moss covered volcanic lava field

House under the Rocks, Portugal

Syria, Crac des Chevaliers with moat

Syria, Crac des Chevaliers

Glass of Blackberry schnapps with Blackberries (Rubus sectio Rubus) in front of rustic wood

A glass of red currant schnapps with red currants (Ribes rubrum) on wooden background

Small umbrella on a hard drive, symbolic image for data protection

Tough guy showing thumb up, (B&W), close-up, portrait, low angle view

Red Kangaroo (Macropus rufus), Australia

Childrens Clothing
Boys shoes

Goreme National Park in Cappadocia, Turkey

Goreme National Park in Cappadocia, Turkey

Goreme National Park in Cappadocia, Turkey

Goreme National Park in Cappadocia, Turkey

Ancient structure in Pre-Hispanic City of Chichen-Itza in Mexico

Old ruins in Pre-Hispanic City of Chichen-Itza in Mexico

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