Biconical cores have several platforms around the edge of the stone, with flakes taken alternately from either side, resulting in what looks like a pair of cones stuck together at the bases.

There are three sites where a kidney stone will commonly become stuck:

:; Loose impediment: A small natural item which is not fixed or growing, solidly embedded, or stuck to the ball, such as a small stone or leaf.

It seems it was at this stage that the basin stone from the western chamber was moved in an attempt to remove it and was abandoned in the passage because it got stuck.

The curb was a line of stone laid edgewise in the dirt and tilted this way and that by frost in the ground or the roots of trees.

Then, without knowing why, she found herself running from them, fleeing wildly through the trees, dodging her own shadows until she came to a little hollow in the rocky ground with a big stone in the center behind which she knelt and hid, listening to the madness of her heart and wanting for once to cry.

The ground floor, in particular, is rather astonishing with tracery, irregular oval windows and flowing sculpted stone work.

In rituals earth is represented by burying objects in the ground, carving images out of wood or stone, herbalism or using animal fur and bones.

The ground level public area along with the public sitting out area form an 8, 400 m² ( 90, 400 sq ft ) landscaped garden with fountain, trees and artificial stone paving.

Northern style dolmens are above ground with a four sided chamber and a megalithic roof ( also referred to as table type ), while southern style ( usually but not always underground ) are made up of a stone chest or pit covered by a slab.

When the gods knew that Fenrir was fully bound, they took a cord called Gelgja ( Old Norse " fetter ") hanging from Gleipnir, inserted the cord through a large stone slab called Gjöll ( Old Norse " scream "), and the gods fastened the stone slab deep into the ground.

Traditionally, the corn for grits was ground by a stone mill.

Hail is composed of transparent ice or alternating layers of transparent and translucent ice at least thick, which are deposited upon the hail stone as it cycles through the cloud, suspended aloft by air with strong upward motion until its weight overcomes the updraft and falls to the ground.

By 1600, the medieval wall is likely to have been seen more as a platform for displaying hangings and the pomery as a gathering ground for the spectators or as a source of building stone and a site for its use.

A few bone tools and some ground stone have also been found.

A single ground stone axe was discovered in a burial, and several more were obtained from the surface.

These ground stone axes are the earliest to come from a stratified context in the South Asia.

On the western side is a worthy bed, on the ground, a stone chimney, a wardrobe and a certain other small chamber ; at the eastern end is a pantry and a buttery.

The Georgian stone buildings in Charlestown that are visible today had to be partially rebuilt after the earthquakes, and this led to the development of a new architectural style, consisting of a wooden upper floor over a stone ground floor ; the new style resisted earthquake damage much more effectively.

The stone spent the next two years below ground level in a station of the Postal Tube Railway at Mount Pleasant near Holborn.

It is a rough stone, above ground, leaning inwards towards the stone circle.

The high dry ground made travel easy and provided a measure of protection by giving traders a commanding view, warning against potential attacks. The Ridgeway ( Uffington Castle ringfort in distance on left ) The Bronze Age saw the development of Uffington White Horse and the stone circle at Avebury.

Until the early 20th century, the chief ancient buildings at Sparta were the theatre, of which, however, little showed above ground except portions of the retaining walls ; the so-called Tomb of Leonidas, a quadrangular building, perhaps a temple, constructed of immense blocks of stone and containing two chambers ; the foundation of an ancient bridge over the Eurotas ; the ruins of a circular structure ; some remains of late Roman fortifications ; several brick buildings and mosaic pavements.

At one of these villages is a spring, where water flows out from under a stone, but in no great abundance ; and it is conducted by a channel, cut in the ground, to a place outside the town ( of Hebron ), where they have constructed a covered tank for collecting the water ... The Sanctuary ( Mashad ), stands on the southern border of the town .... it is enclosed by four walls.

Changes took place in burial customs, a new type of burial ground spread from Germanic to Estonian areas, stone cist graves and cremation burials became increasingly common aside a small number of boat-shaped stone graves.

The place is inhabited by several hundred warlike women who are anachronisms of the Twentieth Century -- stone age amazons who live in an all-female, matriarchal society which is self-sufficient ''.

Here, on the hottest day, it is cool beneath the stone and fresh from the water flowing in the sluices at the bottom of the vaults.

Behind him lay the Low Countries, where men were still completing the cathedrals that a later Florentine would describe as `` a malediction of little tabernacles, one on top of the other, with so many pyramids and spires and leaves that it is a wonder they stand up at all, for they look as though they were made of paper instead of stone or marble '' ; ;

Thus a man who is butting a stone wall at the office may become unusually aggressive in bed -- the one place he can still be champion.

`` The white colonnaded, cedar-roofed Southern mansion is directly traceable via the grey and buff stone of grey-skied England to the golden stucco of one particular part of the blue South, the Palladian orbit stretching out from Vicenza: the old mind of Andrea Palladio still smiles from behind many an old rocking chair on a Southern porch, the deep friezes of his architectonic music rise firm above the shallower freeze in the kitchen, his feeling for light and shade brings a glitter from a tall mint julep, his sense of columns framing the warm velvet night has brought together a million couple of mating lips ''.

The connection with Dorians and their initiation festival apellai is reinforced by the month Apellaios in northwest Greek calendars, but it can explain only the Doric type of the name, which is connected with the Ancient Macedonian word " pella " ( Pella ), stone.

The male Colostethus subpunctatus, a tiny frog, protects his egg cluster which is hidden under a stone or log.

Its usage is mostly restricted to engravings on stone and jewelry, although inscriptions have also been found on bone and wood.

Related to this is lexicostatistics, which attempts to determine the degree of relation between a set of languages by comparing the percentage of basic vocabulary ( words like " I ", " you ", " heart ", " stone ", " two ", " be ", " and ") they share in common.

Kierkegaard's concept of angst is considered to be an important stepping stone for 20th-century existentialism.

The Ancient Pueblo culture is perhaps best known for the stone and adobe dwellings built along cliff walls, particularly during the Pueblo II and Pueblo III eras.

New sectors, such as precious stone processing and jewelry making and communication technologyArmentel ( left fromt the USSR era ), which is not even owned by the government or Armenian investors.

At the cemetery in what is now the district of Pullach stood a memorial stone which was mentioned as recently as 1967, but which is no longer at the site.

In front of the large windows, as if they were pillars that support the complex stone structure, there are six fine columns that seem to simulate the bones of a limb, with an apparent central articulation ; in fact, this is a floral decoration.

It is usually just a large block of concrete or stone at the end of the chain.

Often, the fact that sometimes only a thin surface layer of violet color is present in the stone or that the color is not homogeneous makes for a difficult cutting.

Ambergris is less dense than water and floats, whereas amber is less dense than stone, but too dense to float.

Pliny is presenting an archaic view, as in his time amber was a precious stone brought from the Baltic at great expense, but the Germans, he says, use it for firewood, according to Pytheas.

* 1248 – The foundation stone of Cologne Cathedral, built to house the relics of the Three Wise Men, is laid.