Shaded relief and 3D visualization in the browser

KyFromAbove has long produced elevation datasets for the public. Using their Phase II lidar point clouds, we created a new shaded relief and DEM raster tile sets for web mapping. While most mapping applications focus on ground elevations, we use the above-ground elevations to make a digital surface model (DSM). These elevations show buildings, trees, and even cars.

These above-ground elevations, however, have unique challenges. The latest project attempts to minimize errors and create visually impactful shaded relief and RGB DEM for elevations. More details soon.

Check out the preview here: outrageGIS.com/maps/new-circle

Screenshot map web page

Lexington’s UKy campus

Yahoo Falls

Yahoo Falls Picnic Area is located in the Big South Fork National River and Recreation Area in Kentucky. The scenic area contains short hikes and overlooks of the Cumberland River and Yahoo Falls, an impressively tall waterfall. The area is surrounded by the Daniel Boone National Forest with a variety of trails and camping options. You can create a 9-mile loop hike by combining the Yahoo Falls Trail, Sheltowee Trace, and USFS 602 & 612 trails.

Yahoo falls

Backpacking tips. While no camping is allowed in the Picnic Area, Alum Ford primitive campground is about 2 miles south on the Sheltowee Trace. Big South Fork manages the campground and it is $15/night. There is no water or electricity at the campground and cellular service is weak along the Cumberland River. Hit me up for additional tips. Get lost and have a blast.

Ridge Trail to Hensley Settlement

With 2,000 vertical feet, the hike to Hensley Settlement is a challenging mountain adventure. Cumberland Gap National Historical Park is Kentucky’s only mountain national park and sees the fraction of visitors that other parks and forests see. Why? It’s not easy to get to the Hensley Flats, a mountain-top grassland that the Hensley-Gibson families cultivated and lived for decades. The shortest route to Hensley is via Chadwell Gap, a 4-mile one-way trip. It’s steep. The next option is via the Civic Park trailhead, an 8-mile one-way trip. It’s steep and long. But, you’ll visit incredible destinations and overlooks, including the White Rocks overlook and Sand Cave, one of the largest rock shelters in the region. For an epic day or overnight, start at the Wilderness Road campground and take the Gibson Gap Trail to the Ridge Trail. You’ll be alone in the wilderness. When you get to Hensley, prepare yourself for a proper, crystal-clear mountain high.

Banjo tune, Cumberland Gap, performed by Rich Kirby @appalshop

Backpacking tips. This national park requires a free permit to camp in the backcountry. The cabin at Martins Fork, with three bunk beds and a fireplace, can be rented. Black bears are very active in the park. Drinking water can be hard to find on the Ridge Trail. Hensley Settlement has a water spigot that is available from spring through fall. The larger streams flow all year. The maps in the video show campsites. Hit me up for additional tips. Get lost and have a blast.

outrageGIS.com turns 25

outrageGIS.com started in 1999 and has been continuously online since then. The first version of the website had this animated GIF. Check out the evolution of the site on the Wayback Machine.

outrageGIS mapping in 1999

While we are known for trail maps, we started mapping for video animation and broadcast graphics. You might remember your nightly local news in Kentucky and seeing maps—we might have contributed to that graphic.

In the early 2000s, we slung on a Trimble Pro XRS backpack GPS unit, outfitted a one-color offset press studio, and began printing spot and process color maps. Our first title was the Red River Gorge trail, a two-color map that we sold in local gas stations. We then printed titles for the Big South Fork, Great Smokies, Cumberland Gap, and the Daniel Boone National Forest. We did numerous contract maps for state parks and non-profits, and even an audio driving tour, The First Frontier Audio Driving Tour.

Gazetteer for the Trail Atlas of the Great Smokies, a 32-page 6″ x 4.5″ duotone booklet

In 2008, Boyd started teaching at the UKy Department of Geography and accepted a faculty position in 2018. His work focuses on terrain modeling and topographic mapping using lidar data. Periodically, outrageGIS mapping is brought into the classroom to demonstrate web and digital media technologies.

How far do you have to travel to find adventure?

If you live near downtown Lexington, you don’t have far to travel to find sidewalks and shared-use paths that provide an escape to a nascent wildland.

Town Branch Trail phase 6 complete
Town Branch Trail Phase 6 complete

Town Branch Trail is an example. Lexington was built on this stream called the “Town Branch of the Elkhorn.” It was the industrial heart of early Lexington. Most cities have industrialized spaces that become abandoned. These derelict landscapes are primed for recreational and educational opportunities.

Wherever you live, advocate for building local trails.

Down arrow?

When you encounter a trail navigation sign, you understand left, right, and forward. But, does down mean back? This eight-year-old said yes and quizzed me on it at Berea Fort Mountain.

What arrow is being covered?
What arrow is being covered?

gis.uky.edu

The Department of Geography at the University of Kentucky has a new portal for information relevant to our mapping and GIS activities. It’s still in development but I thought that I’d share the site: https://gis.uky.edu

Portal for UKy Geography mapping & GIS: https://gis.uky.edu
Portal for UKy Geography mapping & GIS: https://gis.uky.edu

Trail maps for the Salato Hiking Trail

How many times have you taken a photo with your phone of a trailhead kiosk map? Inside the mailbox were neatly folded paper maps made by the Kentucky Department of Fish and Wildlife.

Salato Hiking Trail
Trail maps for the Salato Hiking Trail

Terrain Explorer

In this web map, we explore how to use different elevation models in 3D maps. The KyFromAbove project collects and maintains high-resolution elevation data and aerial imagery for Kentucky. The bare-earth Digital Elevation Model (DEM) was created from a lidar point cloud. This is the typical elevation model that we use. The same point cloud was then filtered to create a Digital Surface Model (DSM) showing above-ground elevations, like buildings and trees. Both of these elevation models were converted to terrain tiles to use in web mapping applications. MapLibre GL JS 3D features terrain rendering with RGB-encoded elevation raster tiles.

Terrain Explorer
Explore different terrain models at outragegis.com/terrain-explorer/

The sliders allow the viewer to change the vertical exaggeration of the DEM and DSM. If geolocation is enabled, a track will record the viewer’s location. That track can be downloaded as a GeoJSON (works in Chrome).

Visit the page: outragegis.com/terrain-explorer/

This was a project in the UKy Geography MAP 675, a course in the department’s Digital Mapping MS graduate program. The aerial imagery and elevation data are from 2019.

Rock Bridge Recreation Area

With picnic amenities, this short hike in the Red River Gorge is a solid family vacation. Red River Gorge Backpacking Map & photos.

Creation Falls
Creation Falls

Welcome to summer

Can you guess where this popular site is located? Find this location on our Red River Gorge Backpacking Map & Sheltowee Trace North Trail Map hiking maps.

Jump Rock, ST mile marker 78.5
Jump Rock, Sheltowee Trace mile marker 78.5

Mountain laurel in full bloom

We might be in peak mountain laurel bloom this May. We visited mile marker 77 on the Sheltowee Trace and found a riotous scene of white and pink flowers.

Mountain laurel on the Sheltowee Trace

Updated SheltoweeTrace.com

We love hiking the Sheltowee Trace. Often, we want to know how much vertical elevation gain we have accumulated over a longer hike. To this end, we’ve added a cumulative elevation gain calculator to sheltoweetrace.com. Give it a try and tell us what you think.

Sheltowee Trace web page and map

Canopy height model

An analysis estimating tree canopy heights using KyFromAbove lidar point clouds (2019) combined with an NDVI layer derived from NAIP 2018 imagery for Lexington, Kentucky 2019. 19.3% in canopy cover.

Interactive map for existing canopy and for trees removed between 2010 and 2019.

Because of the difference between the lidar and photographic sensors, artifacts are present around tall structures like water towers, powerlines, and buildings.

Tree canopy model

GEO 409, Spring 2024.

Triplett Creek Suspension Bridge

This bridge was once part of the Sheltowee Trace. Today, you can find this near mile marker 34. Find more images of the Sheltowee Trace on our Flickr page.

Triplett Creek suspension bridge
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