This is one of the "empty" corners of New Mexico, with low population density and comparatively few attractions. Culturally, it has many affinities to the "panhandle" regions of Oklahoma and Texas. Geographically, it forms the western edge of the Great Plains and gradually rises to meet the Sangre de Cristos, with a band of ancient (and, in a few areas, more recent) volcanoes running southwest to northeast toward the state's northeastern corner to provide a little scenic variety.
Mainly to yourself; this is a very empty region. Non-English speakers are in shorter supply than in some other areas of New Mexico, but you may have some opportunities to use Spanish, particularly in some of the small towns near the Sangre de Cristos where Spanish may even be the dominant language.
The nearest major airport is in Albuquerque just beyond the southwest corner of the region. Interstate highway 40 forms the southern boundary of the region, and I-25 runs through it north to south, so highway access is generally not a problem. The primary Amtrak line across the Southwest, the Southwest Chief, follows I-25 through this region, but stations are few and far between, with just one stop in Las Vegas and another in Raton.
Drive. The high plains generally pose fewer driving difficulties than other parts of the state, but make sure to keep your car well fueled owing to the paucity of service stations except along the interstates. Blizzards occasionally roar through in the winter and can close the roads for short periods.
The Blue Hole is an improbable spring/lake at Santa Rosa that's worth a look to break the drive along I-40 or if you're following the Route 66 tour. If for some reason you're hauling scuba gear across this arid terrain, you can break it out here or at nearby Perch Lake for an unexpectedly interesting dive (permit required, call the information center at +1 575 472-3763 for details). More prosaically, it's just nice to look at.
There are several small wildlife refuges in the region that also provide breaks from driving, particularly during bird migration season. The largest (smaller than the ones along the Rio Grande to the west, but still significant) is Las Vegas National Wildlife Refuge east of Las Vegas, while the most convenient to the cross-country traveler is a small area at Lake Tucumcari, near the town of the same name along I-40. You'll also have chances to see wildlife as you drive here; the area east of I-25, for example, is rich in pronghorn antelope.
Another interesting thing to watch for as you drive is the remains of the historic Santa Fe Trail. The state of New Mexico has done a good job of erecting markers where the Trail crosses highways, with interpretive text in many locations, some of them photogenic. If you'd like a more up-close-and-personal experience with the Trail, start by visiting Fort Union National Monument, as listed under "Do."
Few of the towns of the region have much in the way of museums, etc., but there is a small museum in Raton with artifacts of 19th-century life. Open T-S during the summer, W-S the rest of the year; free. Clayton, Springer and Tucumcari also have small museums of primarily local interest.
Capulin Volcano National Monument east of Raton preserves a relatively recent volcanic field centered on the Capulin cinder cone, believed to have erupted about 60000 years ago. The visitor center (open days except some holidays; $5/car fee, Park Pass applies) is on the volcano's crater rim, and trails from here reach the rim and the floor of the crater. There are other volcanic features in the immediate area of the monument.
Fort Union National Monument, just north of I-25 east of Las Vegas, preserves ruins of an important 19th-century fort along the Santa Fe Trail. A short interpretive trail winds through the ruins. Open days except holidays, fee (Park Pass).
If you're interested in paleontology, Clayton Lake State Park, about 15 miles northwest of Clayton, is well worth a visit owing to an unusually rich bed of fossil dinosaur tracks that was unearthed during excavation to build the spillway for the man-made lake. A short hike around the lake reaches the tracks and interpretive displays. (You can try water sports while you're there, but don't expect Lake Mead.) Day-use access to the park costs $5 per car and is not covered by an NPS Park Pass, as this is a state, not national, park.
Philmont Museum Seton Memorial Library, 17 Deer Run Rd (4 miles south on hwy 21), ☎ 575-376-1136. 8-5 Monday-Friday. Exhibits, library and gift shopedit
It's mainly road food, and not much of that. The south-bound traveler on I-25 who doesn't want to wait for the culinary delights of Santa Fe should look for vittles in Raton (Pappa's Sweet Shop, near exit 451, has a reasonable reputation). Tucumcari plays the comparable role for those westbound on I-40 (Branding Iron Restaurant and Del's are adequate, and there are several other diners). Pickings on the overland routes are thin. Your best bet for food near Capulin Volcano is probably in Clayton; try one of the restaurants there and write it up.
The Rabbit Ears restaurant in Clayton is a good place to get Mexican Food. The price is reasonable too. It's located on the NW side of town on Hwy 87.
The usual comments on driving in the Great Plains apply. This is a good area in which to keep your gas tank full; towns are few and far between, and you don't want to run out of gas forty miles from nowhere. There is very little crime (after all, there's very little population) and no public health hazards of any unusual significance.
If you're following the Route 66 itinerary (which follows I-40 here), the section of the road east of this region is one of the most boring on the entire highway; however, there are several points of interest on the westbound side, as you head into the central region. Clines Corners is a wide spot in the road on the boundary between northeast and central that's of no great interest itself (well, a little interest for its historic role of servicing travelers on 66 -- grab a tank of gas and some munchies) but serves to alert you that more interesting terrain lies ahead.
I-25 leaves the state north of Raton and continues over Raton Pass into Colorado. Trinidad is the first town north of the state line and has several points of interest connected with the Santa Fe Trail, as well as serving as a departure point for roads heading west into the Colorado mountains.
This is a usable article. It gives a good overview of the region, its sights, and how to get in, as well as links to the main destinations, whose articles are similarly well developed. An adventurous person could use this article, but please plunge forward and help it grow!