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Colorado, Dinosaur National Monument, Hell's Canyon, spring pools

Mexico, Coahuila, 6.3 mi. south Castanos

Colorado, Great Sand Dunes National Monument headquarters.

Italy, caves of Monte Albo near Nuoro

Mexico, Nuevo Leon, Villa de Garcia, river bed

Colorado, Great Sand Dunes National Monument headquarters

Mexico, Puebla, 13 mi. southwest Tehuacan, on Hwy. 125

Mexico, Oaxaca, 1 mi N Los Cues, 3200'

Colorado, 1 mi W. Mesita

Mexico, Quintana Roo, 6 miles S of Puerto Morelos at km 65 in jungle

Mexico, Campeche, 8.5 mi N Chencoyi, (Rt 180 turnoff)

Mexico, Yucatan, 5 miles N of Kikil

Texas, 9 miles SE of Luling, Palmetto State Park

Mexico, Quintana Roo, in Puerto Morelos

Colorado, 4 mi. N. Pueblo, on highway 85

Mexico, Oaxaca, San Antonio, Tehuantepec

Mexico, Chiapas , Comitan

Mexico, Oaxaca, E Palomares

Mexico, Oaxaca, Villa Hermosa, Comaltepec, Ixtlán

Mexico, Oaxaca, Lachiguiri, Techuantepec, 7000'

Colorado, Arvada, Lakeside Resort

Colorado, Arvada, Lakeside Resort

Mexico, Baja California, 57 mi. north Punta Prieta

Mexico, Oaxaca, Santa Maria Candelaria, Yantepec

Mexico, Oaxaca, San Isidro, Yolox, Ixtlán

Mexico, Tlaxcala, 0.5 mi S Puebla & Tlaxcala border, 2 mi N Tlaxco

Mexico, Zacatecas, 52 mi SE Durango

Mexico, Veracruz, Veracruz, 16 miles W of junction 145 and 150 (W of Entronque La Tinaja)

Mexico, Sinaloa, Sinoloa, 52 miles E of Villa Union, near summit of mountains

California, edge of Tecolate Canyon, (5.5 miles N of downtown San Diego)

California, 17 miles north-northeast of Ramone on Pamo Valley Road, 1.5 miles north of Black Canyon Campground

Arizona, Oak Flat Campground (4 mi E Superior on US 60-70; then 1.2 mi S on dirt road), 4000ft

Colorado, 2.5 miles E of Boulder, Valmont Road, Farm Pond

Arizona, 3 mi. east southeast Wilcox

Mexico, Sonora, 10 km E Esqueda

Colorado, ponds E of Lake Valley Golf Course

Colorado, Roggen

Colorado, Boulder Reservoir

Mexico, Nayarit, Cueva del Guano, Punta de Mita, 10 km S of Sayulita, near Puerto Vallarta

Colorado, Ft. Collins, T7N, R68W, s17, NE quarter

Colorado, 4 miles E of Ft. Collins

Colorado, 1 mille E of Ft. Collins, T7N, R68W, s17; NE quarter

Mexico, San Luis Potosi, Nicos, 32 km NW of Ciudad Valles

Colorado, 5 miles WNW Fruita, 2.7 miles N of highway 50

Colorado, 1.5 mi NW Fort Morgan

Colorado, N Boulder, 15th Street and Sumac, 5300'

Colorado, W of Valmont Power Plant south side, 5350'

Colorado, Two Buttes Reservior, below Dam

Colorado, Red Rock Lake

Colorado, Pond W of Valmont Power Plant