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  2. Sinkhole - Wikipedia

    en.wikipedia.org/wiki/Sinkhole

    The Red Lake sinkhole in Croatia. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.

  3. Pit latrine - Wikipedia

    en.wikipedia.org/wiki/Pit_latrine

    A pit latrine generally consists of three major parts: a hole in the ground, a concrete slab or floor with a small hole, and a shelter. [7] The shelter is also called an outhouse. [10] The pit is typically at least three meters (10 ft) deep and one meter (3 ft) across. [7]

  4. Earth shelter - Wikipedia

    en.wikipedia.org/wiki/Earth_shelter

    A small "underground home" built in the style of Oehler, as only a simple, non-waterproofed hole in ground with simple planks and a plastic sheet to a wall, despite using free labour (ignoring the opportunity costs of not having time to go to work) and recycled materials, e.g. windows and planks for the wall, is estimated to be 30% cheaper to ...

  5. Earth auger - Wikipedia

    en.wikipedia.org/wiki/Earth_Auger

    A post-hole auger. An earth auger, earth drill, or post-hole auger is a drilling tool used for making holes in the ground. [1] It typically consists of a rotating vertical metal rod or pipe with one or more blades attached at the lower end, that cut or scrape the soil.

  6. Hole - Wikipedia

    en.wikipedia.org/wiki/Hole

    Hole types in engineering: blind (left), through (middle), interrupted (right). In engineering, machining, and tooling, a hole may be a blind hole or a through hole (also called a thru-hole or clearance hole). A blind hole is a hole that is reamed, drilled, or milled to a specified depth without breaking through to the other side of the ...

  7. Why some people have a small hole in front of their upper ears

    www.aol.com/lifestyle/2016-11-29-why-some-people...

    It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH, "generally appears as a tiny skin-lined hole or pit, often just in front of the upper ear where ...

  8. Borehole - Wikipedia

    en.wikipedia.org/wiki/Borehole

    Workers excavate the soil layer by layer, often using a circular motion to create a well-shaped hole. The process is slow and demanding, requiring teamwork and coordination. To prevent the walls from collapsing and to ensure water quality, the borehole is lined with materials like bricks, stones, or concrete rings.

  9. 7 Landscaping Tips That Can Help Keep Water Out of Your ...

    www.aol.com/7-landscaping-tips-help-keep...

    ]Landscaping Tips To Keep Water Out of Your Basement and Enhance Your Yard This article originally appeared on Angi and is syndicated by Cheapism . Like many homeowners, you likely have concerns ...