About Sinkholes and My Upcoming Novel

After 5 months away from my blog, I’m still working on my novel, finishing the ending and tying together loose threads. The finished story will be another Vree Erickson novel, sold at Amazon for the Kindle e-reader.

Pennsylvania sinkholes
Lower shaded areas are where most PA sinkholes happen.


A western PA sinkhole
A western PA sinkhole and house destruction.

Since childhood, I have been fascinated with sinkholes, the idea of bottomless pits, and traveling in time. My new novel, still untitled, will center on these fascinations, as well as lightning strikes, the wonders of electricity, the mysteries of crystal rocks, and the uncharted powers of the human mind.

My story takes place in northwestern Pennsylvania, based on the topography of Erie, Crawford and Warren counties. I live in Erie County (shaded blue on the attached Pennsylvania map above), lived in Crawford County as a child, and travel throughout Warren County often, so I know the topography of these areas well.

Although PA is a high-risk state for sinkholes (also called swallow holes), none of the aforementioned counties has any that compare to the ones in the riskiest areas in PA: the limestone valleys through central PA—around State College and from the Maryland line up through Harrisburg and east to Allentown and Lancaster.

Still, sinkholes happen in the northwest part of the state when empty oil beds and coalmines collapse, and when acidic rainwater and groundwater dissolves the carbonate rocks beneath us. And that is the threat I give to the fictional place in my novel.

Timaru, Pareora, New Zealand
Arial photo, west of Timaru, Pareora, New Zealand. Photographer G. R. ‘Dick’ Roberts © Natural Sciences Image Library.


Winslow, Arizona
Arial photo of several sinkholes located Southwest of Winslow, Arizona. Photo courtesy of Louis J. Maher, Jr.

The land in my novel (based on land composition not far from my backyard) is karst topography, albeit small in area. As you can see in the two photos above, karst topography can have many sinkhole depressions sculpted in the landscape. Since the bedrock in karst areas is typically soluble limestone or dolostone, chemical weathering has already occurred over thousands of years to produce large voids, known as cavities or caves. From these large voids come subsidence sinkholes and collapsing sinkholes.

With subsidence sinkholes, the fractures in the bedrock grow with time from the rainwater’s chemical reaction with the rocks. As the voids grow, groundwater flow increases, dissolving continues, and land slowly drops as the bedrock dissolves away.

Collapsing sinkholes happen when void spaces become well developed, the arch becomes too large to support the overlying soils, and an abrupt collapse occurs. Factors usually include the water table dropping which results in soils becoming very saturated and dense. Eventually the cavern’s roof cannot support the weight of the overlying material and the cavity collapses instantaneously. Yes, instantaneously. The formation and release of collapsing sinkholes can happen in a matter of seconds. They can destroy entire houses and swallow portions of roads or anything else that sits above the unstable ceiling.

A sinkhole in the Karst topography of northeast Iowa funnels ...
A sinkhole in the karst topography of northeast Iowa. Photo by Tim McCabe, USDA Natural Resources Conservation Service.


Picher sinkhole in Oklahoma
This photo of the Picher sinkhole in Oklahoma is a popular image on the Internet. Years of mining for lead and zinc has left the town full of sinkholes like this one.

Despite the dangers of sinkholes swallowing people, places, and things, my novel wouldn’t be mine if it didn’t include some science fiction and fantasy elements. Time travel is a major theme because it is so fun to imagine and write about. Of course, time travel comes with repercussions, which adds greatly to the story arch.

So, enough about sinkholes. It’s time to get back to work. The climax and dénouement of falling in a sinkhole await a certain person in my novel.

7 thoughts on “About Sinkholes and My Upcoming Novel

    1. Thank you. And yes, I will keep you posted. It was great to have time to visit your blog again after time away. Somehow I was no longer following your blog, so I wasn’t receiving any notifications of your posts. Not sure how that happened but I fixed that problem right away. 🙂


    1. Having the ground fall in under your feet is a fear greatly discussed by children at one of my drawing classes. Not sure how we got on the topic, but it stayed with me and ended up in my stories. Fear of sinkholes may not rank as high as spiders and snakes, but the fact that it happens gives us something to ponder … and hope it never happens to us.

      Have a safe and happy 4th of July!


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