THE STUDENT PILOT HAD PLANNED A SOLO CROSS COUNTRY IN PREPARATION FOR THE PRIVATE PILOT CERTIFICATE. WHEN HE REACHED HIS FIRST DESTINATION AIRPORT, HE COULD NOT OBTAIN FUEL BECAUSE OF THE NEW YEARS HOLIDAY. HE FLEW TO ANOTHER NEARBY AIRPORT, AND HE COULD NOT OBTAIN FUEL THERE EITHER. FINALLY HE WAS ABLE TO LOCATE AN OPEN FBO AND PROCEEDED THERE FOR FUEL. HE INFORMED HIS INSTRUCTOR VIA TELEPHONE THAT HE HAD BEEN DELAYED AND ASKED FOR SOMEONE TO FLY DOWN AND PICK HIM UP, SINCE HE MIGHT NOT MAKE IT BACK PRIOR TO SUNSET. THE INSTRUCTOR TOLD HIM TO FUEL THE AIRPLANE AND RETURN HOME. DURING THE RETURN LEG, IT BECAME DARK. WHILE ESTABLISHED ON FINAL APPROACH FOR LANDING, THE AIRPLANE COLLIDED WITH TREES LOCATED UNDER THE FINAL APPROACH COURSE. THE PILOT LATER REPORTED THAT HE NEVER SAW THE TREES, AND HE FAILED TO UTILIZE THE AIRCRAFT LANDING LIGHT. THE PILOT HAD A TOTAL FLIGHT TIME OF 57 HOURS, INCLUDING 3 AT HOURS AT NIGHT. HIS PREVIOUS NIGHT FLIGHT WAS FLOWN 5 MONTHS PRIOR TO THE ACCIDENT.