Translation of resourceful in German

I guess you know Spanish very well. I'm not on line most of the time. I think to get accommodation in the city is hard. I have many friends in Madrid, they all live outside the city. I think we can help each other to practice German or Spanish.
First we got some lunch which was the first normal experience on that day. Then we were told to take a boat. A fisherman and his young daughter were rowing and we continued on the river.
At noon we continued to the Altiplano to visit some lakes and volcanoes. At 4000 meter above see level it became suddenly extremely cold and our heads started to spin. Altitude sickness?