An archaeological dig on the Danish island of Bornholm has turned up a small stone, in two pieces, with scratches in a criss-cross pattern that has led researchers to conclude it’s a 5,000-year-old map of the island.
Earthquakes, Eruptions and Emissions
The Smithonian’s Earthquakes, Eruptions and Emissions interactive map “is a time-lapse animation of volcanic eruptions and earthquakes since 1960. It also shows volcanic gas emissions (sulfur dioxide, SO2) since 1978 — the first year satellites were available to provide global monitoring of SO2.” [Axis Maps]
Texas Monthly on Smith Map Studio

Texas Monthly has a piece about Christopher Alan Smith, who for the past decade has been creating original maps, mostly of Texas and Texas-related subjects. It’s been his full-time gig since 2008. Smith uses a mixture of pen-and-ink and acrylic paints:
I tend to follow the style of postage stamps and currency. I use a pen-and-ink stipple technique, which is a series of dots that create the illusion of halftones. Cross-hatching is another method, using lines instead of dots. I’ve also started using engraved wood to give the maps a layered, 3-D look. For example, on my Thirteen Colonies map, I illustrated the coastline on two layers of hardboard.
[WMS]
Mapping Mosul

The New York Times is mapping the battle for Mosul on this page; the maps show the changing front lines around the city (see above).
Meanwhile, the Washington Post explains the history of Mosul in five maps.
Mapping Clinton and Trump’s Upside Potential (Whatever That Means)
Earlier this month FiveThirtyEight built a county-by-county model showing where both Hillary Clinton and Donald Trump’s “upside potential” — by which they meant where they would each benefit from the shifts in the electoral landscape. Compared to 2012, Clinton is underperforming with non-college-educated whites and Trump is underperforming with Asians, African-Americans, Latinos and college educated whites.
To get a handle on how these shifts could affect the electoral landscape, we modeled how many of Romney’s votes came from college-educated whites and minorities and how many of Obama’s votes came from non-college-educated whites in each state, county and congressional district. The difference between these two vote totals, shown in the map above, can tell us where Clinton and Trump have the most potential to build on 2012.
The authors went on to game out what that might look like in terms of the electoral vote if one in five voters in those shifting groups switched allegiances.
Mapping Scottish and/or Nonexistent Islands
The Scotsman’s review of Scotland: Mapping the Islands focuses on the Scottish islands that didn’t exist, particularly in a 1560 map by Italian mapmaker Giorgio Sideri (aka Callapoda). On the other hand: “In contrast to Callapoda’s chart, many genuine Scottish islands were omitted from maps of Scotland altogether until only 150 years ago.” [Tony Campbell]
Speaking of islands that didn’t exist, and maps thereof, there’s a new book about them. The Un-Discovered Islands by Malachy Tallack (Birlinn, October). “Gathered in the book are two dozen islands once believed to be real but no longer on the map. These are the products of imagination, deception and simple human error. They are phantoms and fakes: an archipelago of ex-isles and forgotten lands.” Available in the U.K. for now (or via third-party sellers); the Shetland News story about the book suggests that a U.S. edition is forthcoming. Official website. [WMS]
Previously: New Map Books for October 2016.
River Basins in Rainbow Colours
The latest map to go viral is Robert Szucs’s dramatic and colourful map of the U.S. river basins. It’s even more spectacular in high resolution. Made with QGIS, the map separates river basin by colour and assigns stream thickness by Strahler number. I do have a couple of quibbles. The map doesn’t distinguish between the Hudson Bay and Atlantic watersheds: the Great Lakes and Red River basins are coloured the same way. And speaking of the Great Lakes, I have no idea why they look like ferns here. The map is available for sale on Etsy, along with similar maps of other countries, continents and regions. Daily Mail coverage.
Exhibition Writeups
A couple of reviews of recent map exhibitions that I’ve mentioned before. First, the Arctic Journal looks at the Osher Map Library’s current exhibition, The Northwest Passage: Navigating Old Beliefs and New Realities (see previous entry). And the St. Louis Library’s fantasy maps exhibit (see previous entry), which wrapped up earlier this month, got a writeup from Book Riot. [Book Riot/Osher Maps]
Road Trees
The Road Trees project has produced animated isochrone maps showing road networks erupting fractally from a single departure point.
An isochrone in a map shows with the same color all points from which it takes the same time to arrive to a specific location.
We chose 10 locations around the world and for each of them constructed the isochrones on top of the road network of the corresponding country. Consequently, we plot these isochrones using a dynamic color palette representing the diffusion from the location of interest to any other point of the road network.
Unexpectedly, we found that the isochrones follow beautiful fractal patterns, very similar to networks shaped in the Nature by rivers, veins, or lightnings.
Fewer Maps, But Better Maps
Alan Smith of the Financial Times adds to the conversation about when to use a map to present your data, when not to—he gives an example where a gridded infographic is a much better choice than a map—and when more than one map is required to tell the whole story. “So as lovers of maps, we are keen to create beautiful ones whenever they offer a crucial addition. Truly appreciating them, however, means not defaulting to a map just because you can. Like a lot of things in the world of data visualisation, the right way to use them is to follow the mantra ‘fewer, but better’.” [WMS]
Previously: The End of Maps in Seven Charts; Don’t Make a Map.
The Map That Came to Life
As part of National Map Reading Week, the British Library’s map blog points to at least one example of how map reading used to be taught.
One of the most celebrated 20th century children’s map reading guides is showcased in our forthcoming exhibition Maps and the 20th Century: Drawing the Line. Published in 1948, Ronald Lampitt and James Deverson’s The Map that Came to Life follows the story of John and Joanna who use an Ordnance Survey map to walk to town. As they pass over fields, past houses and along footpaths, their surroundings are compared with map adjacent on the same page. The fields turn into contoured blank spaces, houses become black cubes, footpaths dashed lines. Map literacy is acquired by the reader as they accompany the children on their virtual journey, matching map with reality.
In The Map that Came to Life the map is portrayed as an objective, precise and above all truthful mirror of nature. And this inherent trustworthiness enabled maps to become important features of the lives of successive generations of people.
The idea that maps are objective and truthful is not something that would fly today, I think, but in the context of entry-level map education, which in Britain always seems to be specifically in terms of how to read an Ordnance Survey map, rather than maps in general, it seems harmless enough.
A complete scan of the book is available on this website. Back in 2008, Philip Wilkinson talked about the book on the English Buildings blog.
A Map of Proposed Constituency Boundaries
Oliver O’Brien’s map of proposed electoral constituency district changes in the United Kingdom uses a slider to shift between current and proposed boundaries, which I think is a neat way of going about it.
A Historical Atlas of Tibet
Karl E. Ryavec’s Historical Atlas of Tibet (University of Chicago Press, May 2015) was reviewed in India Today by an unusual personage: Nirupama Rao, who among other things has served as India’s ambassador to China and the U.S. Rao calls it “a much-needed and welcome work of scholarship that should benefit and enlighten committed scholars and Tibet aficionados alike. This is a 200-page atlas that is a revelation in itself.” [Tony Campbell]
Gregor Turk’s Conflux

Gregor Turk’s Conflux is on display at Spalding Nix Fine Art in Atlanta, Georgia until October 28. Conflux “features wall-mounted box-like maps of global choke points, strategic locations where passage by land or sea is constricted. Coastlines are depicted as alternating positive and negative cut-outs, framed in a grid and wrapped with repurposed rubber (bicycle inner tubes). Shadows and negative space come into play with the stark structures.” Turk’s past art includes ceramics and public art installations inspired by topographic and city maps; see also his 49th Parallel Project. [The Map as Art]
Pluto Globe Announced
Astronomy magazine has announced a new globe of Pluto based on data from the 2015 flyby of the dwarf planet by the New Horizons probe. The 12-inch globe is limited by what New Horizons was able to see: it’s low-resolution in some areas and blank in others. In addition, 65 surface features are labelled—a brave move considering that all the names are provisional until the IAU approves them. The globe sells for $100.