En el santuario de Flora y Fauna Galeras, ubicado en el departamento de Narino, a 3.200 y 3.800 msnm se evaluo el efecto de la intervencion antropica sobre algunas propiedades de sus suelos. En cada altitud se evaluaron 13 puntos de muestreo, separados 8 m, con un intervalo de 21 dias en tres profundidades (0-5 cm, 5-10 cm, y 10-15 cm) y el mantillo cuando estuvo presente. El mayor aporte a la biomasa de la macrofauna del suelo la hicieron las clases Arachnida, Crustacea, Diplopoda e Insecta y los ordenes Araneae, Coleoptera, Diptera y Polydesmidae, que se localizaron principalmente a los 3.800 msnm; la clase Gasteropoda y el orden Opilionidae lo hicieron a los 3.200 msnm. Como una aproximacion a la obtencion de indicadores de calidad del suelo, se podria utilizar la presencia de algunas clases, ordenes y familias de artropodos ausentes a cuyo numero disminuyo o se localizaron unicamente, a los 3.200 msnm, que es el area intervenida. Dentro de los factores quimicos y fisicos de podrian utilizar el pH, la materia organica, la densidad aparente, la porosidad y la humedad gravimetrica, que tendieron a cambiar con el grado de intervencion. ABSTRACT Evaluation of soils quality Dystric cryandep in the Flora and Fauna Galeras sanctuary, Narino. In the sanctuary of Flora and Fauna Galeras, located in the department of Narino, at 3.200, 3.500 y 3.800 meters above sea level, it was tested the effect of antropic intervention on some soil properties. In each altitude, 13 sampling point separated by 8 meters were established. These were evaluated with a 21 day interval, three types of deepness were considerated (0-5; 5-10 and 10-15 cm) litter when it was present. The highest contribution of biomass of soil microfauna is made by Arachnida, Crustacea, Diplopoda e Insect classes. Araneae, Coleoptera, Diptera and Polydesmidae orders were mainly located at 3.800 m.a.s.l.; Gasteropoda class and Opilionidae order were located at 3.200 m.a.s.l. It could be used as indicators of soil quality, the presence of some classes, orders and arthropod families which are absent or their numbers is decreased or those which are only found at 3.200 m.a.s.l., which is the intervened area. It could be possible to include inside chemical and physical factors. pH, organic matter, apparent density, porosity and gravimetric humidity which tend changing with intervention level happening at 3.200 m.a.s.l.