Step 1: Recall the common well types.
Groundwater is accessed through tube wells, bore wells, open wells, or artesian wells, each built differently.
Step 2: Match the description given.
A well with a large diameter, shallow depth, and dug by hand rather than drilled by machine is the classic description of an open well.
Step 3: Eliminate the other types.
Tube wells and bore wells are narrow, machine-drilled wells, and an artesian well is defined by pressurized flow from a confined aquifer, not by how it was constructed.
\[ \boxed{\text{Open well}} \]